Commonwealth v. Fredericq , 482 Mass. 70 ( 2019 )


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    SJC-12572
    COMMONWEALTH   vs.   STANLEY FREDERICQ.1
    Plymouth.     November 5, 2018. - April 24, 2019.
    Present:   Gants, C.J., Lowy, Budd, Cypher, & Kafker, JJ.
    Cellular Telephone. Controlled Substances. Constitutional Law,
    Search and seizure, Standing to question constitutionality,
    Privacy. Privacy. Search and Seizure, Expectation of
    privacy, Fruits of illegal search, Consent. Practice,
    Criminal, Motion to suppress, Standing.
    Indictments found and returned in the Superior Court
    Department on August 22, 2008.
    A pretrial motion to suppress evidence was heard by Thomas
    J. McGuire, Jr., J.
    An application for leave to prosecute an interlocutory
    appeal was allowed by Lenk, J., in the Supreme Judicial Court
    for the county of Suffolk, and the appeal was reported by her to
    the Appeals Court. After review by the Appeals Court, the
    Supreme Judicial Court granted leave to obtain further appellate
    review.
    Jason Benzaken for the defendant.
    1 The defendant's name is spelled in various court documents
    as "Fredericq" or "Frederico." In accordance with our usual
    practice, we will use the spelling as it appears in the
    indictment.
    2
    Patrick Levin, Committee for Public Counsel Services, for
    Committee for Public Counsel Services.
    Jessica L. Kenny, Assistant District Attorney, for the
    Commonwealth.
    GANTS, C.J.   After the defendant was indicted by a grand
    jury for trafficking cocaine in violation of G. L. c. 94C,
    § 32E (b), he moved to suppress the cocaine and cash seized
    during a warrantless search of his residence on the third floor
    of a multiunit house, commencing the nearly decade-long
    procedural journey that brought this case to our doorstep.    The
    Superior Court judge who last ruled on this motion held that the
    cocaine and cash must be suppressed, concluding that they were
    the fruits of the unlawful police tracking of a cellular
    telephone through which the police obtained cell site location
    information (CLSI) without a search warrant based on probable
    cause.2
    We conclude that the defendant has standing to challenge
    the Commonwealth's warrantless CSLI search because, by
    monitoring the telephone's CSLI, the police effectively
    2 The term "CSLI" refers to "a cellular telephone service
    record or records that contain information identifying the base
    station towers and sectors that receive transmissions from a
    [cellular] telephone" (quotations and citation omitted).
    Commonwealth v. Augustine, 
    467 Mass. 230
    , 231 n.1 (2014), S.C.,
    
    470 Mass. 837
     (2015) and 
    472 Mass. 448
     (2015). It may be used
    to identify the approximate location of the cellular telephone
    based on the telephone's communication with a particular cell
    site. See id. at 238.
    3
    monitored the movement of a vehicle in which he was a passenger.
    We further conclude that, under the circumstances here, the
    seizure of the cocaine and cash was the direct result of
    information obtained from the illegal CSLI search; that, under
    the fruit of the poisonous tree doctrine of the exclusionary
    rule, it is irrelevant whether the defendant had a reasonable
    expectation of privacy in the crawl space where the cocaine was
    found; and that the Commonwealth has failed to meet its burden
    of proving that the seizure was sufficiently attenuated from the
    illegal search such that it should not be deemed a forbidden
    fruit of the poisonous tree.   Specifically, we conclude that the
    defendant's consent to a search of his residence did not purge
    the seizure from the taint of the illegal CSLI search, where the
    consent was obtained through the use of information obtained
    from that search.   For these reasons and as discussed more fully
    infra, we affirm the order granting the defendant's motion to
    suppress.3
    Background.    The complex procedural history of this case is
    ably described in the Appeals Court opinion.    Commonwealth v.
    Fredericq, 
    93 Mass. App. Ct. 19
    , 20-26 (2018).    Suffice it to
    say that the defendant's motion to suppress was initially denied
    by one Superior Court judge, remanded by a single justice of the
    3 We acknowledge the amicus brief submitted by the Committee
    for Public Counsel Services.
    4
    county court for an evidentiary hearing, denied again by another
    motion judge, remanded again by the single justice, and allowed
    by a third motion judge.
    We summarize the facts as found by the third motion judge,
    who relied on the facts found by the first two motion judges at
    the prior evidentiary hearings.    We accept the judges'
    subsidiary findings of fact, which we do not find to be clearly
    erroneous.   See Commonwealth v. Scott, 
    440 Mass. 642
    , 646 (2004)
    ("In reviewing a ruling on a motion to suppress, we accept the
    judge's subsidiary findings of fact absent clear error . . .").
    Where necessary and appropriate, we supplement these findings
    with uncontradicted witness testimony that the motion judges
    implicitly credited.     See Commonwealth v. Jones-Pannell, 
    472 Mass. 429
    , 431 (2015).
    On June 26, 2008, a grand jury indicted Josener Dorisca for
    the murder of Bensney Toussaint, and a warrant issued for
    Dorisca's arrest.   In attempting to locate Dorisca, Detective
    Kenneth Williams of the Brockton police department spoke with
    Dorisca's best friend, Cassio Vertil.4    Cassio admitted that he
    had spoken with Dorisca within a day of the homicide.      After
    Cassio gave his cellular telephone number to the police,
    Williams examined records connected to the telephone, which
    4 We refer to Cassio and Kennel Vertil by their first names
    because they share a surname.
    5
    confirmed that calls had indeed been made after the shooting to
    a cellular telephone belonging to Dorisca.
    Williams recognized Cassio from a videotape recorded months
    before the homicide that showed Cassio and another person
    discussing the movement of drugs from Florida to Massachusetts.
    Williams testified that "the tape clearly displays [Cassio]
    . . . engaged in what seems to be very lucrative drug dealings
    . . .   And bragging and boasting of going to Florida to obtain
    more drugs.    And they're flashing tens of thousands of dollars
    on this tape."
    On July 2, 2008, Williams spoke with Cassio's brother,
    Kennel, who said that Cassio was now using a different cellular
    telephone and provided Williams with the new telephone number.
    Kennel also stated that Cassio was traveling to New York in a
    brown Toyota RAV-4 motor vehicle with individuals nicknamed
    "Paco" and "Paquito."    Williams knew that Paco was the defendant
    in this case and that Paquito was Stephen Allonce.    State
    troopers also learned from a confidential informant that Cassio
    was traveling to Florida in the brown Toyota to purchase
    narcotics.    There was little information offered at the hearings
    regarding the reliability or veracity of this confidential
    informant.    State police Trooper Eric Telford testified that he
    had not used this informant in the past, but Williams
    6
    characterized the informant as "reliable," without explaining
    the basis of this characterization.
    That same day, July 2, the Commonwealth sought and obtained
    a court order, pursuant to 18 U.S.C. § 2703(d) (2006), to
    require the cellular service provider to produce records for the
    cellular telephone that Cassio was now using.    Under § 2703(d),
    a court may order a telephone company to produce records,
    including CSLI records, "if the governmental entity offers
    specific and articulable facts showing that there are reasonable
    grounds to believe that the . . . records or other information
    sought . . . are relevant and material to an ongoing criminal
    investigation."   In addition to subscriber information, the
    court order required, for the period from July 1 through July 6
    (later extended to July 8), the production of records of cell
    sites utilized for telephone calls, toll records for calls made
    or received, and "updates on the phone's location every fifteen
    . . . minutes."
    On July 2, the cellular service provider furnished Williams
    with records showing that the defendant was the subscriber for
    this cellular telephone, and that the defendant resided in an
    apartment in Brockton (residence).    The cellular service
    provider used "ping" technology to send radio signals to the
    cellular phone and record the approximate location of the cell
    sites or cell towers with which the telephone communicated, and
    7
    sent the resulting CSLI records by e-mail to Williams.   Those
    records indicated that the telephone had traveled south from
    Randolph and eventually had come to a stop in Sunrise, Florida.
    Williams then requested the assistance of the local police
    in Florida, who used the CSLI data to track down the brown
    Toyota vehicle and observed Cassio, the defendant, and Allonce
    staying together at a motel.   The local police did not identify
    any of the men as Dorisca.
    On July 7, 2008, the CSLI records indicated that the
    cellular telephone was traveling north toward Massachusetts.      In
    response, the police began surveillance at the defendant's
    residence and also at Cassio's home in Randolph.   At
    approximately 2:15 P.M. on July 8, the police observed the brown
    Toyota vehicle parked at the defendant's residence and saw
    Cassio standing outside with another person who appeared to
    match the description of Dorisca.   Cassio then drove away in the
    vehicle with Allonce as a passenger.   Two State police troopers
    followed them and stopped the vehicle after it had traveled a
    few blocks; they observed that the vehicle contained clothing,
    luggage, and a cooler.   Cassio told the troopers that he had
    just left Paco's house and was heading to the police station in
    Brockton to meet with Williams regarding the homicide.   Cassio
    and Allonce then drove to the Brockton police station; the last
    report of the cellular service provider regarding the cellular
    8
    telephone's location at approximately 3:47 P.M. that day
    indicated that the telephone was located inside the vehicle at
    the Brockton police station.
    The State police troopers returned to the residence to look
    for Dorisca and speak to the defendant.    After approaching the
    building, they encountered two residents of the first-floor
    apartment.    The troopers stated that they were looking for a
    homicide suspect, and the residents consented to a search of
    their unit.    After the troopers looked through the unit, they
    left through a back door into a rear entry area and walked up
    the stairs to the second floor.    The resident of that unit also
    consented to a search of her unit.    The troopers then continued
    up the rear stairway to the third floor, which led to an open
    landing area with several doors that led to two bedrooms, a
    storage area, and a crawl space.    All but one of the doors were
    open.
    The troopers knocked on the closed door and the defendant
    answered, identifying himself as "Paco."    He stated that he
    resided in one of the third-floor bedrooms and paid $400 per
    month in rent to use that space.    Trooper Francis Walls informed
    the defendant that police were investigating a homicide and that
    the murder suspect might be in the building.    He also said that
    the investigation involved illegal narcotics.
    9
    Telford advised the defendant of his Miranda rights and
    explained that they were looking for a homicide suspect, and had
    information that the defendant "had just gone down to Florida
    and purchased a large amount of narcotics and . . . [was]
    possibly storing it there."   The defendant said that he had just
    driven back from Florida with some friends, denied possessing
    drugs, and signed a form giving his consent for a search.
    During that search, the police found $2,200 in cash in the
    defendant's bedroom and, after the arrival of a narcotics-
    trained dog, a pillowcase in the attic crawl space across from
    the defendant's bedroom containing two "bricks" of cocaine.
    After the defendant was indicted, he moved to suppress the
    fruits of the search.
    The third motion judge determined that the defendant had
    standing to challenge the CSLI tracking of the cellular
    telephone because, although the telephone was used by Cassio,
    the police knew that the defendant was traveling with Cassio,
    and "[t]hey intended to track the movements of all three
    occupants of the vehicle because they had information that the
    purpose of the trip was to obtain cocaine for distribution in
    Massachusetts."   The judge also concluded that the cocaine
    seized during the search of the defendant's residence "was found
    as a result of the unlawful electronic tracking," and "[t]he
    search and seizure was not attenuated from the unlawful tracking
    10
    by lapse of time, intervening circumstances or by another
    legitimate police purpose in conducting the search."     The judge
    therefore ruled that the evidence obtained during the search
    must be suppressed as "fruit of the poisonous tree."
    A single justice of this court granted the Commonwealth's
    motion for an interlocutory appeal and reported the appeal to
    the Appeals Court pursuant to Mass. R. Crim. P. 15 (a) (2), as
    appearing in 
    422 Mass. 1501
     (1996).    The Appeals Court agreed
    with the motion judge's conclusions on both standing and
    attenuation, but ultimately held that the warrantless search of
    the crawl space where the cocaine was found was permissible
    because the defendant had no reasonable expectation of privacy
    in that area.   Fredericq, 93 Mass. App. Ct. at 30-31.    On this
    ground alone, the Appeals Court reversed the allowance of the
    motion to suppress with respect to the cocaine, and affirmed it
    in all other respects.   Id. at 32.   We granted the defendant's
    motion for further appellate review.
    Discussion.   In reviewing a judge's decision on a motion to
    suppress, we "make an independent determination of the
    correctness of the judge's application of constitutional
    principles to the facts as found."    Scott, 440 Mass. at 646.
    The police may obtain subscriber information and toll
    records pursuant to a court order issued under 18 U.S.C.
    § 2703(d), but under art. 14 of the Massachusetts Declaration of
    11
    Rights, the police may not use CSLI for more than six hours to
    track the location of a cellular telephone unless authorized by
    a search warrant based on probable cause.5   See Commonwealth v.
    Estabrook, 
    472 Mass. 852
    , 858 (2015); Commonwealth v. Augustine,
    
    467 Mass. 230
    , 254-255 (2014), S.C., 
    470 Mass. 837
     (2015) and
    
    472 Mass. 448
     (2015).   See also Carpenter v. United States, 
    138 S. Ct. 2206
    , 2220 (2018) (government acquisition of CSLI records
    constitutes "a search within the meaning of the Fourth Amendment
    [to the United States Constitution]").   The Commonwealth
    concedes that the CSLI tracking of the cellular telephone in
    this case was unlawful because it was not authorized by a search
    warrant.   But the Commonwealth argues that the motion to
    suppress should nonetheless have been denied because (1) the
    defendant had no standing to challenge the tracking of a
    cellular telephone that was registered in his name, but used
    solely by Cassio; (2) as the Appeals Court concluded, the
    cocaine was not seized during a constitutional search because
    the defendant lacked any expectation of privacy in the crawl
    space where it was found; and (3) the evidence obtained during
    the search was sufficiently attenuated from the illegal tracking
    5 Article 14 of the Massachusetts Declaration of Rights
    states in relevant part: "Every subject has a right to be
    secure from all unreasonable searches, and seizures, of his
    person, his houses, his papers, and all his possessions."
    12
    because of the defendant's consent to the search, thus "purging"
    the search of its taint.     We will discuss these issues in turn.
    1.     Standing.   A defendant has standing to challenge a
    search and seizure under art. 14 if he or she "has a possessory
    interest in the place searched or in the property seized or if
    [he or she] was present when the search occurred."     Commonwealth
    v. Williams, 
    453 Mass. 203
    , 208 (2009).     Here, the defendant was
    the subscriber of the cellular telephone, but the third motion
    judge found that Cassio was the person who was using that
    telephone.    The defendant claims that he has standing on three
    separate and distinct grounds:     first, because he was a
    passenger in the vehicle whose location was being tracked
    through the CSLI monitoring of the cellular telephone; second,
    because he was the registered owner of the telephone, and
    therefore had a reasonable expectation of privacy in the
    location of that telephone; and third, because he had a property
    interest in the telephone that was interfered with when the
    police pinged the telephone, thereby drawing power from its
    battery.     We need not address whether the second and third
    grounds independently would suffice to grant standing, because
    we conclude that the defendant has standing as a passenger of
    the vehicle whose location was effectively being continually
    tracked through CSLI monitoring of the target telephone.
    13
    In Commonwealth v. Rousseau, 
    465 Mass. 372
    , 382 (2013), we
    declared that "under art. 14, a person may reasonably expect not
    to be subjected to extended [global positioning system (GPS)]
    electronic surveillance by the government, targeted at his
    movements, without judicial oversight and a showing of probable
    cause."   We thus held that a passenger with no possessory
    interest in a vehicle has standing to challenge the extended GPS
    surveillance of the vehicle as an invasion of his or her own
    reasonable expectation of privacy.     Id.   See United States v.
    Jones, 
    565 U.S. 400
    , 415-416 (2012) (Sotomayor, J., concurring)
    ("GPS monitoring generates a precise, comprehensive record of a
    person's public movements . . . [and] evades the ordinary checks
    that constrain abusive law enforcement practices.");
    Commonwealth v. Connolly, 
    454 Mass. 808
    , 833 (2009) (Gants, J.,
    concurring) ("the appropriate constitutional concern is not the
    protection of property but rather the protection of the
    reasonable expectation of privacy").
    With respect to the defendant's reasonable expectation of
    privacy, the CSLI tracking of the cellular telephone in this
    case implicates the same constitutional concerns as the GPS
    surveillance of the vehicle in Rousseau.     See Augustine, 467
    Mass. at 254.   Indeed, in Augustine, we noted that the type of
    prospective CSLI tracking that largely took place here -- as
    opposed to historical CSLI tracking -- is even more closely akin
    14
    to direct GPS surveillance.6    Id. at 254 n.36.   The CSLI search
    was "targeted at [the defendant's] movements," much as the GPS
    search was targeted at the passenger defendant in Rousseau,
    because the police knew when they obtained the § 2703(d) order
    that the defendant was traveling out of State with Cassio in the
    same vehicle.    Rousseau, 465 Mass. at 382.   They then sought and
    obtained updates on the vehicle's location every fifteen minutes
    for at least six consecutive days.     For all practical purposes,
    the CSLI monitoring of the cellular telephone tracked the
    defendant's location when he was in the vehicle in much the same
    way as would GPS tracking of that vehicle.     Accordingly, the
    defendant here has standing to challenge the CSLI search and any
    resulting fruits of that search.
    2.    The search of the crawl space as fruit of the poisonous
    tree.     Under what has become known as the "fruit of the
    poisonous tree" doctrine, the exclusionary rule bars the use of
    evidence derived from an unconstitutional search or seizure.
    6 Historical CSLI refers to information that has already
    been generated when the data are requested. Augustine, 467
    Mass. at 240 n.24. Prospective CSLI "refers to location data
    that will be generated sometime after the order authorizing its
    disclosure." Id. Here, the CSLI search was effectively
    conducted in "real time" because the cellular telephone was
    being "pinged" every fifteen minutes, and its location, derived
    from CSLI rather than a global positioning system in the
    cellular telephone itself, was being timely reported by the
    cellular service provider to the police who were conducting the
    surveillance.
    15
    See Wong Sun v. United States, 
    371 U.S. 471
    , 487-488 (1963)
    (defining "fruit of the poisonous tree" as evidence that "has
    been come at by exploitation of" unlawful search or seizure);
    Commonwealth v. Damiano, 
    444 Mass. 444
    , 453 (2005).     In
    determining whether evidence derived from an illegal search or
    seizure must be suppressed, "the issue is not whether 'but for'
    the prior illegality the evidence would not have been obtained,
    but 'whether . . . the evidence . . . has been come at by
    exploitation of [that] illegality or instead by means
    sufficiently distinguishable to be purged of the primary
    taint.'"   Id., quoting Commonwealth v. Bradshaw, 
    385 Mass. 244
    ,
    258 (1982).   "It is the Commonwealth's burden to establish that
    the evidence it has obtained and intends to use is sufficiently
    attenuated from the underlying illegality so as to be purged
    from its taint."   Damiano, supra at 454.   "[T]he attenuation
    doctrine is not an exception to the exclusionary rule, but
    rather a test of its limits."   R.G. Stearns, Massachusetts
    Criminal Law:   A District Court Prosecutor's Guide 172 (38th ed.
    2018).
    The Commonwealth contends, and the Appeals Court concluded,
    see Fredericq, 93 Mass. App. Ct. at 30-31, that the cocaine
    found in the crawl space should not be suppressed even if it has
    failed to meet its burden of proving attenuation because the
    defendant had no reasonable expectation of privacy in the crawl
    16
    space.    We disagree.    Evidence may be suppressed as fruit of the
    poisonous tree even if it is found in a place where the
    defendant has no reasonable expectation of privacy.       This
    principle is as old as the fruit of the poisonous tree doctrine
    itself.    In Wong Sun, 371 U.S. at 474, 486-487, the defendant
    made statements to the police indicating that a codefendant had
    drugs at his home.       The United States Supreme Court held that
    those statements should have been suppressed because they arose
    out of an unlawful arrest and that their admission would thus
    violate the defendant's Fourth Amendment rights.        Id. at 484,
    486-487.   The Court further concluded that the drugs found at
    the codefendant's home should have been suppressed, even though
    the defendant did not suggest that he had a reasonable
    expectation of privacy in the codefendant's home, because the
    drugs were the fruit of a poisonous tree -- the unlawful arrest.
    Id. at 487-488.   The only relevant factor that the Court
    considered was whether the police "exploit[ed]" the "illegality"
    of the unlawful arrest; that alone was sufficient to require the
    suppression of the drugs.       Id. at 488.   See id. at 487 ("The
    prosecutor candidly told the trial court that 'we wouldn't have
    found those drugs except that [the defendant] helped us to'").
    Other courts interpreting the Fourth Amendment have arrived
    at the same conclusion.      See United States v. Olivares-Rangel,
    
    458 F.3d 1104
    , 1117-1118 (10th Cir. 2006) ("the law imposes no
    17
    separate standing requirement regarding the evidence which
    constitutes the fruit of [the] poisonous tree"); United States
    v. Green, 
    275 F.3d 694
    , 699 (8th Cir. 2001) (although defendant
    lacked possessory or property interest in searched motor
    vehicle, "he may still . . . seek to suppress evidence as the
    fruit of his illegal detention"); Jones v. United States, 
    168 A.3d 703
    , 722-723 (D.C. 2017) (defendant's expectation of
    privacy in another person's purse "not a material consideration
    in the fruit-of-the-poisonous-tree analysis").   See generally 6
    W.R. LaFave, Search and Seizure:   A Treatise on the Fourth
    Amendment § 11.4, at 325-326 (5th ed. 2012) (LaFave) ("If the
    defendant does have standing with respect to the poisonous tree,
    that alone suffices" to challenge admissibility of its fruits).
    Nor is the exclusionary rule under art. 14 limited in scope
    to contraband or evidence seized in a place where the defendant
    had a reasonable expectation of privacy; art. 14's protection
    against unreasonable searches and seizures forbids the
    introduction of all evidence "sufficiently intimate" with those
    unlawful acts.   See Damiano, 444 Mass. at 453-454, quoting
    Commonwealth v. Sylvia, 
    380 Mass. 180
    , 183 (1980).   For that
    reason, we have repeatedly held that persons subjected to an
    illegal seizure were entitled to suppress the fruits of that
    seizure even where the evidence was discovered in places where
    it is indisputable that the person in question did not have a
    18
    reasonable expectation of privacy.     See Commonwealth v.
    Rodriguez, 
    456 Mass. 578
    , 587 (2010) (concluding that even
    though "[n]o one has a reasonable expectation of privacy in
    items retrieved from the ground on a public park," evidence of
    drugs dropped in park could nonetheless be "suppressed as the
    fruit of an unconstitutional seizure . . . if [a] stop were not
    supported by reasonable suspicion").     See also Commonwealth v.
    Warren, 
    475 Mass. 530
    , 533, 540 (2016) (vacating denial of
    motion to suppress where firearm found in yard following
    unlawful seizure of defendant nearby without reasonable
    suspicion); Commonwealth v. O'Laughlin, 
    25 Mass. App. Ct. 998
    ,
    998-1000 (1988) (reversing denial of motion to suppress where
    defendant abandoned jacket containing narcotics in parking
    garage while being pursued by police without reasonable
    suspicion for stop).
    We conclude, therefore, that to spare the cocaine from
    suppression, the Commonwealth bears the burden of proving
    attenuation even if the defendant did not have a reasonable
    expectation of privacy in the crawl space of his residence where
    the cocaine was found.7
    7 Because we conclude infra that the Commonwealth has not
    met its burden of proving attenuation, we need not decide
    whether the defendant in fact had a reasonable expectation of
    privacy in that crawl space. Accordingly, we do not consider
    whether the Appeals Court's legal analysis was consistent with
    19
    3.   Attenuation.   The Commonwealth contends that it has met
    its burden to establish sufficient attenuation because the
    causal chain between the illegal CSLI search -- the "poisonous
    tree" -- and the subsequent discovery of the cocaine -- the
    "fruits" -- was broken by the defendant's consent to the search
    of his residence.   We agree that, under certain circumstances, a
    defendant's voluntary consent to a search of his residence may
    be an intervening event that constitutes adequate attenuation,
    thus allowing the evidence found during the search to be
    admitted in evidence.   For instance, in Damiano, 444 Mass. at
    456, 459, where the defendant voluntarily consented to a search
    of his home after he learned that the police had secured the
    premises with his wife and child present and that the police
    intended to obtain a search warrant, we concluded that the
    consent was an intervening event that sufficed to prove adequate
    attenuation from the illegal interception of the defendant's
    communications by a private citizen.
    But a defendant's consent to search, like a defendant's
    consent to waive his or her right to silence after being given
    Miranda warnings, does not automatically attenuate the taint of
    our opinion in Commonwealth v. Leslie, 
    477 Mass. 48
    , 54 (2017),
    where we held that "in cases involving a search in a multifamily
    home, the validity of the search [does not turn] on the
    defendant's exclusive control or expectation of privacy in the
    area searched" (emphasis added).
    20
    an illegality.    See Brown v. Illinois, 
    422 U.S. 590
    , 602-603
    (1975) ("If Miranda warnings, by themselves, were held to
    attenuate the taint of an unconstitutional arrest, . . . the
    effect of the exclusionary rule would be substantially
    diluted").   A defendant's consent to a search cannot constitute
    adequate attenuation where the consent itself is tainted by the
    illegality because it was obtained through exploitation of the
    fruits of the illegal search.   See Commonwealth v. Midi, 
    46 Mass. App. Ct. 591
    , 595 (1999) ("When consent to search is
    obtained through exploitation of a prior illegality,
    particularly very close in time following the prior illegality,
    the . . . compromised consent has been thought to be tainted and
    inadmissible").   See also Brown, supra at 603 (where defendant
    made admissions after unlawful arrest, attenuation depends on
    whether defendant "act[ed] of [his or her] free will unaffected
    by the initial illegality"); Estabrook, 472 Mass. at 864-865
    (where defendant was confronted with evidence obtained from CSLI
    in close proximity to illegality, statements made in direct
    response must be suppressed); Commonwealth v. Fielding, 
    371 Mass. 97
    , 113 (1976) (defendant's statements may be "fatally
    infected" where "the connection between the illegality and the
    making of the statements is sufficiently intimate").
    In determining whether the Commonwealth has met its burden
    of proving that the defendant's consent was not tainted by
    21
    evidence obtained from the illegal CSLI search, we consider
    three factors:   (1) the amount of time that elapsed between the
    defendant being confronted with the illegally obtained CSLI
    evidence and his grant of consent; (2) the presence of any
    intervening circumstances during that time period;8 and (3) "the
    purpose and flagrancy of the official misconduct."   See Damiano,
    444 Mass. at 455, citing Kaupp v. Texas, 
    538 U.S. 626
    , 633
    8 The attenuation analysis regarding whether a defendant's
    consent is tainted by an illegal search must differ somewhat
    from the analysis regarding whether a defendant's postarrest
    statements are tainted by an illegal arrest. See United States
    v. Crawford, 
    372 F.3d 1048
    , 1054 (9th Cir. 2004) (en banc),
    cert. denied, 
    543 U.S. 1057
     (2005) ("The analysis that applies
    to illegal detentions differs from that applied to illegal
    searches"). The potential taint arising from an illegal arrest
    generally comes from the custody arising from the arrest, so the
    temporal proximity consideration focuses on the time that has
    elapsed between the arrest and the statements at issue, and any
    intervening circumstances that occurred between those two
    events. See Commonwealth v. Fielding, 
    371 Mass. 97
    , 114 (1976)
    (three-hour period between arrest and confession, during which
    defendant decided against assistance of counsel, sufficient to
    attenuate confession from unlawful arrest). And the giving of
    Miranda warnings is designed to diminish the coercive effect of
    custodial questioning. Commonwealth v. Simon, 
    456 Mass. 280
    ,
    290, cert. denied, 
    562 U.S. 874
     (2010) (recognizing that Miranda
    warnings serve to "counteract[] the coercion inherent in
    custodial interrogation"). In contrast, the potential taint
    arising from an illegal search generally comes from the
    defendant being confronted with the information derived from the
    illegal search, which may influence what the defendant says and
    his or her willingness to consent to a search. See United
    States v. Shetler, 
    665 F.3d 1150
    , 1158 (9th Cir. 2011).
    Therefore, the temporal proximity consideration in the context
    of this case focuses on the time that elapsed between the
    defendant being confronted with the information illegally
    derived from the CSLI search and the defendant's statements or
    consent, and any intervening circumstances that occurred between
    these two events.
    22
    (2003) (per curiam).    See also Commonwealth v. Tuschall, 
    476 Mass. 581
    , 589 (2017); United States v. Shetler, 
    665 F.3d 1150
    ,
    1159 (9th Cir. 2011).
    As to the first and second factors, the defendant's consent
    was obtained immediately after Telford informed him that the
    police knew he "had just gone down to Florida and purchased a
    large amount of narcotics and . . . [was] possibly storing it
    there" (emphasis added), information that was intimately
    intertwined with the information gleaned from the unlawful CSLI
    tracking.   The temporal proximity between the trooper
    confronting the defendant with information obtained through the
    illegal CSLI tracking and the defendant's grant of consent to
    search, and the absence of intervening events between that
    confrontation and his consent, weigh heavily in favor of the
    motion judge's conclusion that the Commonwealth has failed to
    meet its burden of proving that it did not exploit the illegally
    obtained information in obtaining the consent to search.     See
    Estabrook, 472 Mass. at 865 (finding no attenuation between
    illegal CSLI search and defendant's statement because "there
    were no intervening circumstances between the police questions
    based on the CSLI and [defendant's] responses thereto");
    Shetler, 665 F.3d at 1159 (concluding that there was "causal
    connection between the illegal searches and [defendant's]
    statements, particularly because [government] agents may have
    23
    confronted [defendant] with illegally seized evidence during the
    interview").   Although we can never know the reason why the
    defendant consented to the search, we cannot eliminate the
    possibility that the grant of consent was influenced by the
    information Telford had just told him, which might have caused
    him to believe that the refusal to consent would be futile
    because it would simply trigger an application for a search
    warrant of his home.   See Shetler, supra at 1158 ("the answers
    the suspect gives to officials questioning him may be influenced
    by his knowledge that the officials had already seized certain
    evidence").    See generally LaFave, supra at § 11.4(c), at 401
    ("Confronting a suspect with illegally seized evidence tends to
    induce a confession by demonstrating the futility of remaining
    silent" [citation omitted]).
    The Commonwealth argues that the defendant's consent was
    not influenced by the fruits of the illegal CSLI search because
    the police had independently learned -- apart from the CSLI
    tracking -- that the defendant lived at the residence and that
    he had just returned from a drug deal in Florida.   It contends
    that the police knew from Kennel that the defendant was going to
    New York in the brown Toyota vehicle with Cassio, knew from a
    confidential informant that Cassio was traveling to Florida to
    purchase drugs, knew from stopping the vehicle after the
    defendant had just been dropped off at his residence that they
    24
    had just returned from an extended trip, and knew from the
    defendant that he had been in Florida.
    But nothing about Kennel's statement to the police
    suggested that the defendant was going beyond New York.     And the
    confidential informant's tip did not mention the defendant and
    gave the police no information about when Cassio would return.
    The police began to monitor the defendant's residence only when
    they learned from the CSLI that the vehicle in which he was
    riding was about to enter Massachusetts.   They stopped the
    vehicle only because the physical surveillance -- triggered by
    what the police learned from the CSLI -- spotted Cassio and a
    person they thought might be Dorisca leaving the residence.     And
    the police entered the multiunit house and sought the
    defendant's consent to search his residence only because they
    knew from the CSLI that Cassio and the defendant had just
    returned from Florida and that the defendant might be in
    possession of the drugs that he and Cassio were believed to have
    purchased.   See United States v. Finucan, 
    708 F.2d 838
    , 843 (1st
    Cir. 1983) (government "impermissibly exploited illegally seized
    material" when it "relied upon information obtained from the
    seized documents in guiding [its] investigation").   Therefore,
    we conclude that Telford's statement to the defendant that the
    police knew he "had just gone down to Florida and purchased a
    large amount of narcotics and . . . [was] possibly storing it
    25
    there" was derived from the poisonous CSLI tree and was not
    independently derived information.
    As to the third factor -- "the purpose and flagrancy of the
    official misconduct" -- we recognize that the illegal police
    misconduct here was neither purposeful nor flagrant.   The police
    obtained judicial approval for the CSLI search pursuant to 18
    U.S.C. § 2703(d) in 2008, six years before our decision in
    Augustine declared that CSLI could be obtained only through a
    search warrant supported by probable cause.   We declared in
    Augustine, 467 Mass. at 257, that "this opinion clearly
    announces a new rule," noting that "neither the statute, 18
    U.S.C. § 2703(d), nor our cases have previously suggested that
    police must obtain a search warrant in addition to a § 2703(d)
    order before obtaining an individual's CSLI from his or her
    cellular service provider."
    Although this factor favors the Commonwealth, it is not
    dispositive.   See Tuschall, 476 Mass. at 589 (concluding that
    "[t]he balance of the [attenuation] factors . . . favors the
    defendant" in suppression analysis even though "there was no
    misconduct" by police).   We do not recognize a "good faith"
    exception to either the exclusionary rule or the attenuation
    26
    doctrine.9   See Commonwealth v. Hernandez, 
    456 Mass. 528
    , 533
    (2010) ("We have not adopted the 'good faith' exception [to
    exclusionary rule] for purposes of art. 14 . . ."); Commonwealth
    9 Justice Cypher, in concurring in part and dissenting in
    part, contends that we should abandon our long-standing
    precedent and adopt the good faith exception to the exclusionary
    rule. We will not here address the merits of that argument
    because the Commonwealth did not argue it below or on appeal and
    it is therefore waived. See Commonwealth v. Alexis, 
    481 Mass. 91
    , 101 (2018) ("the Commonwealth waived any argument . . .
    raised neither below nor on appeal"); Commonwealth v.
    Bettencourt, 
    447 Mass. 631
    , 634 (2006) ("Our system is premised
    on appellate review of that which was presented and argued
    below").
    Justice Cypher errs where she states that the issue of the
    good faith exception to the exclusionary rule "was adequately
    raised by the Commonwealth when it discussed attenuation." Post
    at note 5. The good faith exception to the exclusionary rule is
    substantively different from the consideration of police
    misconduct in determining attenuation. Under a good faith
    exception, evidence is admissible even if it is
    unconstitutionally obtained, so long as the police acted in good
    faith. See United States v. Leon, 
    468 U.S. 897
    , 922 (1984)
    (fruits of search admissible where police prove that they acted
    "in objectively reasonable reliance on a subsequently
    invalidated search warrant"); United States v. Diehl, 
    276 F.3d 32
    , 43 (1st Cir.), cert. denied, 
    537 U.S. 834
     (2002) (applying
    good faith exception where officer mistakenly invaded curtilage
    of home to obtain drug evidence). In the attenuation analysis,
    however, the "purpose and flagrancy of the official misconduct"
    is simply one factor of several to be considered. Commonwealth
    v. Damiano, 
    444 Mass. 444
    , 455 (2005). The absence of police
    misconduct is not determinative of attenuation. See
    Commonwealth v. Tuschall, 
    476 Mass. 581
    , 589-590 (2017).
    Recognizing these considerations, the Commonwealth, citing
    Damiano, referenced the lack of police misconduct as only one
    factor in its broader discussion of attenuation. Therefore, the
    Commonwealth cannot be said to have raised the issue whether to
    adopt a good faith exception, and the issue must be deemed
    waived. See Nelson v. Adams USA, Inc., 
    529 U.S. 460
    , 469 (2000)
    ("issues must be raised in lower courts in order to be preserved
    as potential grounds of decision in higher courts").
    27
    v. Upton, 
    394 Mass. 363
    , 370 & n.5 (1985) (G. L. c. 276, §§ 1,
    2A, and 2B, "bar any judicial consideration of admitting
    evidence seized pursuant to a search warrant issued without a
    showing of probable cause, even if the officer executing the
    warrant was proceeding in objectively reasonable reliance on the
    warrant").   In Estabrook, 472 Mass. at 854, 864-865, where the
    CSLI also was obtained before our Augustine decision, we
    suppressed a defendant's statements to police where the
    statements were made "in close proximity to the illegality, and
    there were no intervening circumstances between the police
    questions based on the CSLI and [the defendant's] responses
    thereto."    The facts of this case compel the same result.
    Contrast Damiano, 444 Mass. at 458 (where illegal interception
    was done by private citizen rather than police in violation of
    Federal wiretap statute, "the complete lack of police
    involvement in the underlying illegal interception is not an
    insignificant fact in assessing the necessary reach of the
    exclusionary rule and the adequacy of the attenuating
    circumstances").
    In sum, we agree with the motion judge that the
    Commonwealth has failed to meet its burden of proving that it
    did not exploit the illegally obtained CSLI in obtaining the
    defendant's consent to search, where that consent was intimately
    intertwined -- both temporally and causally -- with the
    28
    information gleaned from the unlawful CSLI tracking and was
    obtained immediately after Telford confronted the defendant with
    that information.
    Conclusion.     The order of the Superior Court judge granting
    the defendant's motion to suppress is affirmed.
    So ordered.
    LOWY, J. (concurring).     While the court's outcome is
    legally correct under present law, I appreciate the call, in
    Justice Cypher's opinion concurring in part and dissenting in
    part, for Massachusetts to recognize a good faith exception to
    the exclusionary rule.    As Justice Cypher's opinion emphasizes,
    "The primary purpose of the exclusionary rule is to deter future
    police misconduct by barring, in a current prosecution, the
    admission of evidence that the police have obtained in violation
    of rights protected by the Federal and State Constitutions."
    Commonwealth v. Santiago, 
    470 Mass. 574
    , 578 (2015).    See Davis
    v. United States, 
    564 U.S. 229
    , 236-237 (2011); United States v.
    Leon, 
    468 U.S. 897
    , 909 (1984).    There is no deterrent value in
    suppressing evidence "when the police act with an objectively
    'reasonable good-faith belief' that their conduct is lawful."
    Davis, supra at 238, quoting Leon, supra.    On the other hand,
    there is value in the certainty that a constitutional violation
    will have consequences.
    However, since Massachusetts has never recognized the "good
    faith" exception, Commonwealth v. Valerio, 
    449 Mass. 562
    , 569
    (2007), adopting this exception to the exclusionary rule would
    be a significant departure from our present jurisprudence.     Such
    a departure, in my opinion, should not be made in a situation
    where neither party raised the issue, either below or before
    this court.   So although I recognize the potential benefits to
    2
    adopting a good faith exception to the exclusionary rule in the
    Commonwealth, such a major question would be best answered after
    both sides to the argument are presented to the court and we
    determine whether to adopt or reject such a change after due
    consideration.
    CYPHER, J. (concurring in part and dissenting in part).
    The Commonwealth concedes that the cell site location
    information (CSLI) tracking of Cassio Vertil's (Cassio's)
    cellular telephone (cell phone) was unlawful because it was not
    authorized by a search warrant.   It argues, however, that the
    defendant did not have standing to challenge the unlawful
    tracking.   I agree with the court that under Commonwealth v.
    Rousseau, 
    465 Mass. 372
    , 382 (2013), the defendant has standing
    to challenge the search of Cassio's cell phone because his
    movements were tracked for six days.1   Because the electronic
    1 In Commonwealth v. Rousseau, 
    465 Mass. 372
    , 382 (2013), we
    concluded that "under art. 14 [of the Massachusetts Declaration
    of Rights], a person may reasonably expect not to be subjected
    to extended [global positioning system] electronic surveillance
    by the government, targeted at his movements, without judicial
    oversight and a showing of probable cause." We did not decide
    how broadly such an expectation might reach and to what extent
    it may be protected. Id. However, the fact that police
    monitored Rousseau over a thirty-one-day period was sufficient
    to establish that he had standing to challenge the validity of
    the warrant.
    Here, the defendant was targeted for substantially less
    time -- six days -- than the defendant in Rousseau. The court
    does not recognize any distinction between the two time frames.
    I too think it is difficult to do so without creating an
    arbitrary time frame. The length of time must be considered on
    a case-by-case basis.
    I also think it is important to emphasize that while the
    passenger here and in Rousseau were both "targets" of the
    tracking, we have not yet adopted "target" standing in
    Massachusetts. See Commonwealth v. Santiago, 
    470 Mass. 574
    ,
    577-578 (2015). However, we have indicated that
    "[u]nconstitutional [searches of] small fish intentionally
    2
    tracking of the cell phone was ongoing while police searched the
    defendant's apartment and there was no temporal break between
    the unlawful police activity and the search of the defendant's
    apartment, I also agree that the defendant's consent to search
    his apartment was not attenuated from the police's illegal
    conduct.   See Commonwealth v. Gentile, 
    466 Mass. 817
    , 831
    (2014).    And I agree, albeit not based on the Massachusetts
    support cited by the court, that the fruits of that search --
    the cocaine -- must be suppressed, even though the defendant had
    no reasonable expectation of privacy in the crawl space.2    See
    undertaken in order to catch big ones may have to be discouraged
    by allowing the big fish, when caught, to rely on the violation
    of the rights of the small fish, as to whose prosecution the
    police are relatively indifferent" (citation omitted). Id.
    That is clearly not the case here, or in Rousseau. It is
    important to understand the distinction between "target
    standing," which permits a criminal defendant who is the
    "target" of a search, i.e., the big fish, to contest the
    legality of that search and object to the admission at trial of
    evidence obtained as a result of the search, see id., and the
    standing recognized in Rousseau and by the court here, which
    emphasizes that a person who is specifically tracked for an
    extended period of time has standing to contest that search. I
    would not necessarily conclude that an incidental passenger in a
    car that was being tracked would have standing to challenge a
    search.
    2 The court does not reach the issue of whether the
    defendant had a reasonable expectation of privacy in the crawl
    space where the cocaine was discovered. See ante at note 7.
    The court states, "[W]e do not consider whether the Appeals
    Court's legal analysis was consistent with our opinion in
    Commonwealth v. Leslie, 
    477 Mass. 48
    , 54 (2017), where we held
    that 'in cases involving a search in a multifamily home, the
    validity of the search [does not turn] on the defendant's
    
    3 Jones v
    . United States, 
    168 A.3d 703
    , 722-723 (D.C. 2017).    See
    generally 6 W.R. LaFave, Search and Seizure:   A Treatise on the
    Fourth Amendment § 11.4, at 325-326 (5th ed. 2012) ("If the
    exclusive control or expectation of privacy in the area
    searched'" (emphasis added). Ante at note 7. Leslie, supra,
    instructs that we apply the same curtilage analysis to multiunit
    homes as we do to single-family homes, where in the past we have
    held that a tenant does not have a reasonable expectation of
    privacy in a "common area" in an apartment building, see
    Commonwealth v. Thomas, 
    358 Mass. 771
    , 774-775 (1971).
    If I were not constrained to conclude that the cocaine must
    be suppressed as fruit of the illegal search of the cell phone,
    and if I were to decide the crawl space issue, I would conclude
    that the defendant did not have a reasonable expectation of
    privacy in the crawl space. Applying the four-factor test
    introduced in United States v. Dunn, 
    480 U.S. 294
    , 301 (1987),
    which we adopted in Leslie, 477 Mass. at 55, I would conclude
    that the crawl space was not "so intimately tied to the
    [defendant's apartment] itself that it should be placed under
    the [apartment's] 'umbrella' of Fourth Amendment protection."
    Id., quoting Dunn, supra. See Commonwealth v. Fernandez, 
    458 Mass. 137
    , 142 (2010) ("In the context of a curtilage
    determination, we undertake our independent review cognizant
    that there is no finely tuned formula that demarcates the
    curtilage in a given case" [quotation and citation omitted]).
    I do not read the Leslie decision as granting multiunit
    apartment buildings the same broad protection as a single-family
    home. Although the court in Leslie expanded the protection that
    may be given curtilage in such circumstances, the facts must
    still be analyzed. Otherwise, an overly broad interpretation
    may lead to results that are inconsistent with the over-all
    framework of our search and seizure jurisprudence. For example,
    the broadest reading of Leslie would require us to conclude that
    a tenant on the first-floor apartment has the same
    constitutional protections in his own apartment as he does in a
    separate apartment on the second floor. Although the crawl
    space is enclosed within the four walls of the apartment
    building, it does not necessarily warrant the same protections
    as the areas enclosed inside the four walls of a single-family
    home. The Dunn factors were applied in Leslie. I would apply
    them here.
    4
    defendant does have standing with respect to the poisonous tree,
    that alone suffices" to challenge admissibility of its fruits).
    I dissent because I think that it is time that we adopt a
    good faith exception to the exclusionary rule in circumstances,
    such as here, where at the time the police sought judicial
    permission to track the cell phone, they were properly complying
    with the law, namely, the Stored Communications Act, 18 U.S.C.
    § 2703(d) (2006) (SCA).
    1.   Reasonable expectation of privacy in the crawl space.
    I start by briefly highlighting that we have never articulated
    that any fruit, even those fruits in areas where the defendant
    does not have a reasonable expectation of privacy, must be
    suppressed if its discovery flows from an illegal search.     The
    court concludes that the tracking of Cassio's CSLI was illegal,
    the defendant's consent to search his apartment did not remove
    the taint of the initial illegality, and therefore all evidence
    against the defendant must be suppressed.   The court determines
    that we need not address whether the defendant had a reasonable
    expectation of privacy in the crawl space where the cocaine was
    found because "we have repeatedly held that persons subjected to
    an illegal seizure were entitled to suppress the fruits of that
    seizure even where the evidence was discovered in places where
    it is indisputable that the person in question did not have a
    reasonable expectation of privacy."   See ante at    .   To
    5
    support this proposition, the court cites three cases.    See
    Commonwealth v. Warren, 
    475 Mass. 530
    , 533, 540 (2016);
    Commonwealth v. Rodriguez, 
    456 Mass. 578
    , 587 (2010);
    Commonwealth v. O'Laughlin, 
    25 Mass. App. Ct. 998
    , 998-999
    (1988).   These three cases all are inapposite to the facts and
    circumstances of the present case and do not fully support the
    broad proposition that any fruit, even those fruits in areas
    where the defendant does not have a reasonable expectation of
    privacy, must be suppressed if its discovery flows from an
    illegal search.3
    The court does point to Federal law, however, in support of
    its position.   See United States v. Olivares-Rangel, 
    458 F.3d 1104
    , 1117 (10th Cir. 2006) ("While the fruit of the poisonous
    3 In Commonwealth v. Rodriguez, 
    456 Mass. 578
    , 587 (2010),
    we stated that if a defendant drops contraband on the ground in
    a public park after he was stopped in the constitutional sense,
    the drugs could be suppressed as fruits of an unlawful seizure
    if the stop was not supported by reasonable suspicion. Both
    Commonwealth v. Warren, 
    475 Mass. 530
    , 533 (2016), and
    Commonwealth v. O'Laughlin, 
    25 Mass. App. Ct. 998
    , 999 (1988),
    are cases in which the defendant discarded contraband while
    fleeing from police. In those cases, we suppressed the evidence
    because police did not have reasonable suspicion to stop the
    defendant. See Warren, supra at 540; O'Laughlin, supra at 999-
    1000. The results in these cases flow from our decision in
    Commonwealth v. Stoute, 
    422 Mass. 782
    , 789 (1996), in which we
    held that art. 14 provides more protection than the Fourth
    Amendment to the United States Constitution in defining the
    moment at which a person's personal liberty has been
    significantly restrained by the police, so that he or she may be
    said to have been seized within the meaning of art.
    14. Contrast California v. Hodari D., 
    499 U.S. 621
    , 629 (1991).
    Thus, we did not use an attenuation framework in these cases.
    6
    tree doctrine applies only when the defendant has standing
    regarding the Fourth Amendment violation which constitutes the
    poisonous tree, . . . the law imposes no separate standing
    requirement regarding the evidence which constitutes the fruit
    of that poisonous tree"); United States v. Green, 
    275 F.3d 694
    ,
    699 (8th Cir. 2001).    Historically, we have often granted
    greater protections to defendants under art. 14 of the
    Massachusetts Declaration of Rights than the protections
    provided under the Fourth Amendment to the United States
    Constitution.     See Commonwealth v. Alexis, 
    481 Mass. 91
    , 98-99
    (2018), and cases cited.    For this reason, I am inclined to
    think that although we have never specifically stated it, we
    would come to the same conclusion as the Federal courts and
    declare that fruits, such as the cocaine here, should be
    suppressed.
    2.   The exclusionary rule.    The Commonwealth obtained CSLI
    from Cassio's cell phone in 2008 pursuant to an SCA order that
    the Commonwealth properly sought and obtained.    Under the SCA, a
    court may order a telephone company to produce records,
    including CSLI records, "if the governmental entity offers
    specific and articulable facts showing that there are reasonable
    grounds to believe that the . . . records or other information
    sought . . . are relevant and material to an ongoing criminal
    investigation."    18 U.S.C. § 2703(d).   In 2014, six years after
    7
    the Commonwealth lawfully obtained the CSLI, we held that the
    government must secure a warrant before accessing CSLI records.
    Commonwealth v. Augustine, 
    467 Mass. 230
    , 254-255 (2014), S.C.,
    
    470 Mass. 837
     and 
    472 Mass. 448
     (2015).   Four years after
    Augustine, the United States Supreme Court held that the
    government acquisition of CSLI records constitutes "a search
    within the meaning of the Fourth Amendment."4   Carpenter v.
    United States, 
    138 S. Ct. 2206
    , 2220 (2018).
    In any consideration of police conduct, we must be
    cognizant that "[r]easonableness [is] the 'touchstone'" of art.
    14 and the Fourth Amendment.   Commonwealth v. Roland R., 
    448 Mass. 278
    , 281 (2007), quoting Commonwealth v. Gaynor, 
    443 Mass. 245
    , 256 (2005).   The contours of reasonableness are drawn by a
    consideration of the nature of the intrusion into the privacy
    interest at play, Commonwealth v. Feyenord, 
    445 Mass. 72
    , 86
    (2005) (Greaney, J., concurring), cert. denied, 
    546 U.S. 1187
    (2006), and the nature of the law enforcement interest at stake.
    "The primary purpose of the exclusionary rule is to deter future
    4 In Commonwealth v. Augustine, 
    467 Mass. 230
    , 232, 254-255
    (2014), S.C., 
    470 Mass. 837
     and 
    472 Mass. 448
     (2015), because
    there was no Federal or Massachusetts decision regarding whether
    obtaining CSLI data was a search in the constitutional sense, we
    remanded the case to the Superior Court to determine whether the
    application pursuant to 18 U.S.C. § 2703(d) established probable
    cause. Here, I agree with the Appeals Court and conclude that a
    remand is not necessary because the application in 2008 cannot
    establish probable cause.
    8
    police misconduct by barring, in a current prosecution, the
    admission of evidence that the police have obtained in violation
    of rights protected by the Federal and State Constitutions."
    Commonwealth v. Santiago, 
    470 Mass. 574
    , 578 (2015).    "[W]here
    'the exclusionary rule does not result in appreciable
    deterrence, then, clearly, its use . . . is unwarranted.'"
    Commonwealth v. Wilkerson, 
    436 Mass. 137
    , 142 (2002), quoting
    United States v. Janis, 
    428 U.S. 433
    , 454 (1976).   Another
    consideration is the protection of judicial integrity through
    the dissociation of the courts from unlawful conduct.   See
    Commonwealth v. Ford, 
    394 Mass. 421
    , 433 (1985) (Lynch, J.,
    dissenting).   Where those purposes are not furthered, rigid
    adherence to a rule of exclusion can only frustrate the public
    interest in the admission of evidence of criminal activity.
    Commonwealth v. Brown, 
    456 Mass. 708
    , 715 (2010).
    The Supreme Court recognizes a "good faith" exception to
    the exclusionary rule where the government "act[s] with an
    objectively reasonable good-faith belief that their conduct is
    lawful" (quotation and citation omitted).   Davis v. United
    States, 
    564 U.S. 229
    , 238 (2011).   We have not adopted the good
    faith exception to the exclusionary rule, yet we have never
    specifically articulated why art. 14 might prohibit us from
    doing so.   Instead, where the good faith exception has been
    addressed and not reflexively dismissed, our cases have focused
    9
    on whether the violations are substantial and prejudicial.       See
    ante at   .     See Commonwealth v. Hernandez, 
    456 Mass. 528
    , 533
    (2010); Commonwealth v. Rutkowski, 
    406 Mass. 673
    , 677 (1990).
    We have said that "the mere fact that an unlawful search and
    seizure has occurred should not automatically result in the
    exclusion of any illegally seized evidence."    Commonwealth v.
    Gomes, 
    408 Mass. 43
    , 46 (1990).   See, e.g., Commonwealth v.
    Holley, 
    478 Mass. 508
    , 525 (2017) (warrant did not comply with
    particularity requirement or limit scope of search, but
    defendant "suffered no prejudice"); Hernandez, supra;
    Commonwealth v. Beldotti, 
    409 Mass. 553
    , 559 (1991).
    Using the standard that has been articulated to determine
    whether to exclude evidence obtained as a result of an illegal
    search or seizure, we balance (1) the degree to which the
    violation undermined the principles underlying the governing
    rule of law, and (2) the extent to which exclusion will tend to
    deter such violations from being repeated in the future.     Gomes,
    
    408 Mass. 46
    .    See Hernandez, 456 Mass. at 532 (exclusion is
    deterrent to abuse of official power based on application of
    State legal principles); Wilkerson, 436 Mass. at 142;
    Commonwealth v. Benoit, 
    382 Mass. 210
    , 216 (1981), S.C., 
    389 Mass. 411
     (1983) (exceptions to strict application of
    exclusionary rule are justified when deterrence rationale is
    outweighed by competing societal interest in convicting guilty).
    10
    Where we have allowed the introduction at trial of evidence that
    was obtained through an illegality, it has usually turned on
    whether there was a technical error in procuring a warrant, not
    whether the police conduct was legal at the time the warrant was
    procured.   See Holley, 478 Mass. at 525-526; Rutkowski, 406
    Mass. at 677.
    With the touchstone of art. 14 in mind, I think that it is
    time we adopt the good faith exception to the exclusionary rule
    in circumstances, such as here, where the police had an
    objectively reasonable good faith belief that their conduct was
    lawful at the time they applied for the SCA order.   See Illinois
    v. Krull, 
    480 U.S. 340
    , 350 (1987) ("Penalizing the officer for
    the [legislature's] error, rather than his own, cannot logically
    contribute to the deterrence of Fourth Amendment violations"
    [citation omitted]).
    Here, police fully complied with the terms of § 2703(d),
    which authorized the release of CSLI.   Police acted in good
    faith in seeking the SCA order and in relying on what they (and
    the judge issuing the order) reasonably understood was the
    existing law at the time.   In 2008, no precedent -- whether
    Federal or in the Commonwealth -- indicated that the use of
    § 2703(d) to obtain CSLI was unconstitutional.   There was
    nothing to suggest to the government that it reasonably could
    not rely on the statutory scheme set forth in § 2703(d).
    11
    Therefore, I would hold that the fact that Augustine
    subsequently invalidated any means of obtaining CSLI without
    probable cause and a warrant does not require suppression of
    CSLI obtained six years earlier in 2008.    See Brown, 456 Mass.
    at 715 ("Judicial integrity . . . is hardly threatened when
    evidence properly obtained under Federal law, in a federally run
    investigation, is admitted as evidence in State courts.    To
    apply the exclusionary rule in these circumstances . . . would
    plainly frustrate the public interest disproportionately to any
    incremental protection it might afford").   See also United
    States v. Adkinson, 
    916 F.3d 605
    , 611 (7th Cir. 2019); United
    States v. Goldstein, 
    914 F.3d 200
    , 203 (3d Cir. 2019) (even
    though collection of evidence violated Fourth Amendment,
    prosecutors relied on objectively good faith belief that
    obtaining defendant's data was legal under § 2703[d]); United
    States v. Curtis, 
    901 F.3d 846
    , 849 (7th Cir. 2018) ("though it
    is now established that the Fourth Amendment requires a warrant
    for the type of cell-phone data present here, exclusion of that
    information was not required because it was collected in good
    faith"); United States v. Zodhiates, 
    901 F.3d 137
    , 143 (2d Cir.
    2018), cert. denied, 
    139 S. Ct. 1273
     (2019) (good faith
    exception to exclusionary rule applies to CSLI, obtained prior
    to Supreme Court's decision in Carpenter, pursuant to § 2703[d]
    because search was made in "objectively reasonable reliance on
    12
    appellate precedent existing at the time of the search").    See
    generally Commonwealth v. Gonzalez, 
    90 Mass. App. Ct. 100
    , 106
    (2016).
    Because the SCA order was sought and issued on an informed
    understanding of State constitutional principles in place in
    2008 and because there is no suggestion of misconduct by any
    agent of the Commonwealth, the suppression of the evidence
    obtained pursuant to the order would disserve the enduring
    deterrent rationale of the exclusionary rule.   See Hernandez,
    456 Mass. at 532; Gomes, 408 Mass. at 46.   Accordingly, even if
    obtained in violation of art. 14, the CSLI at issue should be
    admitted.5
    5 The court does not reach the issue of the good faith
    exception on the ground that the issue was not raised. I think
    the issue was adequately raised by the Commonwealth when it
    discussed attenuation. The court notes that "the good faith
    exception to the exclusionary rule is substantively different
    from the consideration of police misconduct in determining
    attenuation." See ante at note 9. I disagree. While police
    misconduct is but one factor in our attenuation analysis, that
    factor is sufficiently intertwined, in this case, with the
    question whether the police acted in good faith that I do not
    see a meaningful distinction. See Davis v. United States, 
    564 U.S. 229
    , 238 (2011) (good faith exception to exclusionary rule
    applies where police "act with an objectively reasonable good-
    faith belief that their conduct is lawful"). That being said, I
    recognize that the two concepts are not one and the same. I
    agree with the court that the defendant's consent was not
    attenuated from the search of his cell phone, mainly because the
    search was ongoing while the police approached the defendant's
    door. However, I reiterate that whenever we discuss the
    exclusionary rule, whether it be in the purview of attenuation
    or good faith, the touchstone of art. 14 is reasonableness. The
    Commonwealth argued that the police acted in good faith under
    Commonwealth v. Damiano, 
    444 Mass. 444
    , 455 (2005). Keeping in
    mind the primary purpose of the exclusionary rule -- to deter
    police misconduct -- I would give the Commonwealth the benefit
    in applying that reasoning to the overarching theme of the good
    faith exception. See Santiago, 470 Mass. at 578.