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

By Attorney Joe Serpa | Georgetown University Law Center, J.D. | 30 Years Massachusetts Criminal Defense

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, is not a general license to search a defendant’s entire digital life. 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 before a judge will authorize a warrant. Officers must then execute that warrant within its precise boundaries. A digital search that exceeds those boundaries is unconstitutional, and the evidence it produces is suppressible.

The Constitutional Framework: Riley v. California and Beyond

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), which 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. Financial records, medical history, private communications, location data, and years of photographs all live on a single device. The historical rationales for the search-incident-to-arrest exception do not extend to this category of evidence.

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 before Carpenter v. United States, 585 U.S. 296 (2018), reached the same result under the Fourth Amendment. Massachusetts defendants facing digital searches can therefore assert both federal and state constitutional challenges simultaneously. For a general overview, see our page on Illegal Searches and Seizures in Massachusetts or our Massachusetts digital search FAQ.

A warrant to search a phone is also not an order to unlock it. Compelled passcodes raise separate self-incrimination questions, which we address in our post on whether you must give police your iPhone passcode in Massachusetts.

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. This is distinct from the first requirement. 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 that rule in Commonwealth v. White, 475 Mass. 583 (2016), holding 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. Owning a phone is not a nexus. The court reaffirmed the principle 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.

Timeliness matters as well. The facts in the affidavit must be fresh enough to support a belief that the evidence remains on the device, and stale information will defeat probable cause. Delay also cuts against the government after a seizure. In White, the SJC held that police who seize a phone without a warrant may hold it only for the short period needed to apply for one, and it found an undiligent 68 day delay unreasonable.

Particularity as to the data to be searched. Under the narrowly tailored standard developed in Massachusetts case law, 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 carry 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

Among the most powerful constitutional challenges to a digital device search in Massachusetts is the overbreadth challenge, the argument that the warrant authorized a broader search than the probable cause supported.

In practice, law enforcement frequently requests and receives warrants authorizing the extraction of the entire contents of a device, meaning all text messages, all emails, all photographs, all application data, all location history, and all browser history for all time periods. When the underlying criminal investigation concerns a discrete incident, such as a single alleged assault, a specific financial transaction, or a particular communication, such a warrant is not narrowly tailored to the offense. It is a digital fishing expedition, and Massachusetts courts have the authority to suppress the fruits of it.

A Motion to Suppress based on overbreadth challenges the warrant on its face and examines the underlying affidavit to determine whether the scope of the authorized search was proportionate to the probable cause presented. If the court finds the warrant overbroad, it must determine which of the extracted data, if any, falls within the constitutionally permissible scope, and it must suppress the rest. Our overview of the Massachusetts criminal process explains where a suppression motion fits in a prosecution.

The Two-Step Search Protocol and the Plain View Doctrine

Massachusetts courts have grappled with 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. That doctrine does not translate cleanly to the digital environment, where every file becomes potentially visible once an examiner opens the extraction.

Courts in Massachusetts and in the federal system have accordingly pushed law enforcement toward 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 that extracted data, and the review must stay within the categories the warrant authorizes. 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

Digital search law moved again shortly after this post first appeared. On June 29, 2026, the United States Supreme Court held in Chatrie v. United States that a geofence demand, which compels a technology company to identify the devices present in a defined area around a crime scene, is a search under the Fourth Amendment. The Court concluded that people retain a reasonable expectation of privacy in their location history even when a third-party company stores it, building directly on Carpenter. Law enforcement must now justify geofence requests with a warrant supported by probable cause and drawn with particularity. Our full analysis of the Chatrie geofence decision covers its consequences for pending Massachusetts cases, and our 2026 Massachusetts evidence update tracks the broader digital privacy and AI landscape.

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, such as Apple iCloud, Google Drive, Meta, Snapchat, or a cellular carrier, is governed by a separate federal statutory framework, the Stored Communications Act (18 U.S.C. § 2701 et seq.).

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. Massachusetts defendants whose data has been obtained from third-party platforms should have defense counsel examine the legal process used to compel that disclosure. If the government used a subpoena where a warrant was required, the data is suppressible.

Digital search warrants also arise with increasing frequency in cases charged under Massachusetts’s new nonconsensual intimate image statute, the Act to Prevent Abuse and Exploitation (Chapter 118, Acts of 2024), which took effect September 18, 2024, and under the federal TAKE IT DOWN Act, signed May 19, 2025. When a defendant is accused of distributing intimate images without consent under M.G.L. c. 265, § 43A, investigators typically seek warrants for the defendant’s phone, social media accounts, cloud storage, and messaging applications. The same particularity requirements that apply to all digital warrants under Riley v. California, 573 U.S. 373 (2014), 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. See our guide to the Massachusetts Revenge Porn and Nonconsensual Intimate Image Law under Chapter 118 of the Acts of 2024 and the Federal TAKE IT DOWN Act.

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 our overview of Illegal Searches and Seizures in Massachusetts.
• A Massachusetts digital search warrant affidavit must establish probable cause that a crime occurred, a specific nexus between that crime and the particular device under Commonwealth v. White and Commonwealth v. Snow, and particularity as to the categories of data to be searched under Commonwealth v. Dorelas. General authorization to extract all device data is constitutionally overbroad.
• A warrant authorizing wholesale extraction of an entire device’s contents without limitation as to data type or time period invites suppression as a digital fishing expedition, and Snow directs 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, and data obtained with insufficient process 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.
• Never consent to a warrantless search of a digital device, because consent generally forfeits the constitutional challenges described above. See our page on your Right to Remain Silent and refuse searches in Massachusetts.

Serpa Law Office has defended Massachusetts criminal cases for 30 years and litigates digital suppression issues in courts throughout Greater Boston. Contact Serpa Law Office at 617.936.0201 or visit our Contact page for a confidential case review.