Digital Search Warrants in Massachusetts: What Police Must Prove to Search Your Phone or Computer

By Attorney Joe Serpa | Georgetown University Law Center | Massachusetts Criminal Defense Since 1995

June 2026. Updated July 2026 for the Supreme Court’s geofence ruling in Chatrie v. United States.

A Massachusetts search warrant for a digital device, whether a smartphone, laptop, tablet, or cloud storage account, does not authorize a search of all of a defendant’s digital data. Under the Fourth Amendment to the United States Constitution, Article 14 of the Massachusetts Declaration of Rights, and the developing body of Massachusetts case law governing illegal searches and seizures, law enforcement must satisfy specific, narrowly defined requirements.

A judge authorizes a digital search warrant only after law enforcement satisfies those requirements. Officers must then execute that warrant within its precise boundaries. A digital search that exceeds those boundaries is unconstitutional. A judge can suppress the evidence that police obtain through such a search.

The Constitutional Framework Under Riley v. California and Article 14

The foundational constitutional protection governing digital device searches in Massachusetts derives from the United States Supreme Court’s ruling in Riley v. California, 573 U.S. 373 (2014). In that case, the Supreme Court held that law enforcement must obtain a warrant before searching the digital contents of a cell phone seized incident to arrest.

The Court recognized that a modern smartphone contains more personal information than any physical space subject to a traditional search. A single device can hold financial records, medical history, private communications, location data, and years of photographs. The historical rationales for the search-incident-to-arrest exception do not justify a search of the digital contents of a phone.

In Massachusetts, Riley is supplemented by Article 14 of the Declaration of Rights, which the Supreme Judicial Court has consistently interpreted to provide broader privacy protections than the Fourth Amendment in certain contexts. In Commonwealth v. Augustine, 467 Mass. 230 (2014), the SJC required a warrant for historical cell site location information. Four years later, the United States Supreme Court came to the same conclusion under the Fourth Amendment in Carpenter v. United States, 585 U.S. 296 (2018). Massachusetts defendants facing digital searches can therefore assert both federal and state constitutional challenges simultaneously.

A warrant to search a phone is also not an order to unlock it. Compelled disclosure or entry of a passcode raises separate self-incrimination questions. The Serpa Law Office post on whether a person must give police an iPhone passcode in Massachusetts addresses those questions.

What Must Be in a Massachusetts Digital Search Warrant Affidavit

To obtain a warrant to search a digital device in Massachusetts, law enforcement must submit a sworn affidavit to a magistrate or judge establishing three things with particularity.

Probable cause that a crime was committed. The affidavit must present specific, articulable facts rather than conclusions or hunches. Those facts must be sufficient to warrant a person of reasonable caution in believing that an offense has occurred. Probable cause demands more than bare suspicion, although it requires considerably less than proof beyond a reasonable doubt.

Probable cause that evidence of that crime will be found on the specific device. The second requirement is distinct from the first requirement of probable cause that a crime was committed. The affidavit must establish a nexus between the alleged criminal conduct and the particular device sought to be searched. A general assertion that people who commit crimes use phones is not a sufficient nexus. The Supreme Judicial Court enforced the nexus requirement in Commonwealth v. White, 475 Mass. 583 (2016).

The court held that an officer’s opinion that a phone is likely to contain evidence of the crime, standing alone, does not supply probable cause to seize the device. The fact that a suspect owns a phone does not establish a nexus between the crime and the phone. The court reaffirmed the nexus requirement in Commonwealth v. Snow, 486 Mass. 582 (2021), warning that police may not rely on the ubiquitous presence of cell phones in daily life as a substitute for particularized information.

The facts in the affidavit must be fresh enough to support a belief that the evidence remains on the device. Stale information does not establish probable cause. A delay by the police in seeking a warrant after a seizure also counts against the government. In White, the SJC held that police who seize a phone without a warrant may hold the phone only for the short period needed to apply for a warrant. The court found an undiligent 68 day delay unreasonable.

Particularity as to the data to be searched. Massachusetts courts have developed a narrowly tailored standard for warrants to search digital devices. Under that standard, a warrant authorizing a search of a digital device must specify the categories of data to be examined and must limit that examination to data connected to the offense under investigation. In Commonwealth v. Dorelas, 473 Mass. 496 (2016), the SJC held that searches of a smartphone must be conducted with special care and confined to the places within the device where the evidence sought may reasonably be found.

In Snow, the court added that an initial cell phone warrant should presumptively contain a temporal restriction and should err on the side of narrowness. The Attorney General’s office instructs prosecutors and police in similar terms in its Massachusetts Digital Evidence Guide. A warrant that authorizes wholesale extraction of all data on a device without limitation is overbroad and constitutionally defective.

The “Overbreadth” Challenge: Digital Fishing Expeditions

The overbreadth challenge is a constitutional challenge to a digital device search in Massachusetts. In an overbreadth challenge, the defense argues that the scope of the search authorized by the warrant exceeded the probable cause shown in the affidavit.

In practice, law enforcement frequently requests and receives warrants authorizing the extraction of the entire contents of a device. These warrants authorize the extraction of all text messages, all emails, all photographs, all application data, all location history, and all browser history for all time periods.

A warrant for the entire contents of a device is not narrowly tailored to the offense when the underlying criminal investigation concerns a discrete incident, such as a single alleged assault, a specific financial transaction, or a particular communication. A search under such a warrant is a digital fishing expedition. Massachusetts courts have the authority to suppress the evidence obtained in such a search.

A Motion to Suppress based on overbreadth challenges the warrant on its face. In deciding the motion, the judge examines the underlying affidavit to determine whether the scope of the authorized search was proportionate to the probable cause presented. A judge who finds the warrant overbroad must determine which of the extracted data, if any, falls within the constitutionally permissible scope. The judge must suppress the rest of the extracted data. The Serpa Law Office overview of the Massachusetts criminal process explains when defense counsel files a suppression motion in the course of a prosecution.

The Two-Step Search Protocol and the Plain View Doctrine

Massachusetts courts have addressed the question of what happens when law enforcement, in the course of executing a valid digital search warrant, discovers evidence of a separate crime not covered by the warrant. The traditional plain view doctrine permits warrantless seizure of contraband or evidence that an officer sees in plain view during a lawful search. The plain view doctrine is difficult to apply to a digital search, because every file becomes potentially visible once an examiner opens the extraction.

Courts in Massachusetts and in the federal system have accordingly urged law enforcement to use a two-step protocol for digital searches. First, a technical specialist performs a forensic extraction of the device’s data. Second, investigators conduct a separate review of the extracted data. The investigators must confine that review to the categories of data authorized by the warrant. Evidence discovered outside those categories during the second step is not automatically admissible under the plain view doctrine and requires independent legal authorization before it can be used.

Update: The Supreme Court’s 2026 Chatrie Decision on Geofence Warrants

The law of digital searches changed again shortly after this post was first published. On June 29, 2026, the United States Supreme Court held in Chatrie v. United States that a geofence demand is a search under the Fourth Amendment. A geofence demand compels a technology company to identify the devices present in a defined area around a crime scene. The Court relied directly on Carpenter in concluding that people retain a reasonable expectation of privacy in their location history even when a third-party company stores it.

Law enforcement must justify geofence requests with a warrant supported by probable cause and drawn with particularity. The full Serpa Law Office analysis of the Chatrie geofence decision covers the consequences of the decision for pending Massachusetts cases. The Serpa Law Office guide to digital evidence in Massachusetts criminal cases covers the authentication of AI-generated material.

Cloud Storage, Third-Party Platforms, and the Stored Communications Act

A digital search warrant directed at a physical device is governed by Massachusetts constitutional law. A law enforcement demand for data held by a third-party platform is governed by a separate federal statutory framework, the Stored Communications Act (18 U.S.C. § 2701 et seq.). Third-party platforms include Apple iCloud, Google Drive, Meta, Snapchat, and cellular carriers.

Under the SCA, the legal process required to compel a third-party platform to disclose a user’s stored data varies depending on the type of data sought and its age. Certain categories of data require a full probable cause warrant. Others can be obtained with a court order under a lower standard, and still others with a mere subpoena.

After Carpenter, historical cell site location information requires a warrant regardless of the statutory tier, and after Chatrie, the same is true of geofence location data. Under Article 14, automatic license plate reader data from a dense enough camera network is also a search. Commonwealth v. McCarthy, 484 Mass. 493 (2020). Massachusetts defendants whose data has been obtained from third-party platforms should have defense counsel examine the legal process used to compel that disclosure. The data is suppressible if the government used a subpoena where the Fourth Amendment or Article 14 required a warrant.

Digital search warrants also arise with increasing frequency in cases charged under Massachusetts’s nonconsensual intimate image statute, the Act to Prevent Abuse and Exploitation (Chapter 118, Acts of 2024), which took effect September 18, 2024. The same is true of cases charged under the federal TAKE IT DOWN Act, signed May 19, 2025.

Investigators typically seek warrants for the phone, social media accounts, cloud storage, and messaging applications of a defendant accused of distributing intimate images without consent under M.G.L. c. 265, § 43A. The same particularity requirements that apply to all digital warrants under Commonwealth v. Dorelas, 473 Mass. 496 (2016), and Commonwealth v. Snow, 486 Mass. 582 (2021), apply in full to intimate image cases.

A warrant that authorizes a general search of all device contents rather than specifying the categories of images, communications, or account data to be examined is constitutionally deficient. Defense counsel challenges the scope of digital warrants in intimate image cases through the same Motion to Suppress analysis that applies in drug, firearms, and fraud cases.

Key Takeaways

• Under Riley v. California and Article 14 of the Massachusetts Declaration of Rights, law enforcement must obtain a warrant before searching the digital contents of a seized phone or computer. The search-incident-to-arrest exception does not apply to digital devices. See the Serpa Law Office overview of Illegal Searches and Seizures in Massachusetts.
• A Massachusetts digital search warrant affidavit must establish probable cause that a crime occurred and a specific nexus between that crime and the particular device under Commonwealth v. White and Commonwealth v. Snow. Under Commonwealth v. Dorelas, the affidavit must also establish particularity as to the categories of data to be searched. General authorization to extract all device data is constitutionally overbroad.
• A judge may suppress the evidence obtained under a warrant that authorizes wholesale extraction of an entire device’s contents without limitation as to data type or time period, because such a warrant authorizes a digital fishing expedition. In Snow, the Supreme Judicial Court directed that initial phone warrants should err on the side of temporal narrowness.
• The plain view doctrine does not automatically authorize the use of evidence of a separate crime discovered during a valid digital search. Evidence outside the scope of the warrant requires independent legal authorization.
• Data obtained from third-party platforms such as iCloud, Google, and cellular carriers is governed by the federal Stored Communications Act. The legal process used to compel disclosure must match the category of data sought. Data obtained with process that violates the Fourth Amendment or Article 14 is suppressible.
• After Chatrie v. United States, decided June 29, 2026, a geofence demand for location data is a Fourth Amendment search that requires a warrant.
• A person should never consent to a warrantless search of a digital device, because a person who consents generally forfeits the constitutional challenges described above. A person may decline to answer questions and refuse a search.

Serpa Law Office has defended Massachusetts criminal cases since 1995 and litigates digital suppression issues in courts throughout Greater Boston. Contact Serpa Law Office at 617.936.0201 or visit the firm’s Contact page for a confidential case review.

In August 2026, the Supreme Judicial Court again addressed the delay between a phone seizure and the application for a warrant. The court upheld delays of 109 and 123 days. See how long the police may hold a phone before seeking a warrant.