SCOTUS limits the law enforcement use of “geofence” warrants, saying people have “a reasonable expectation of privacy” in their cell-phone location data

Zack Whittaker Lorenzo Franceschi-Bicchierai — The U.S. Supreme Court on Monday limited the law enforcement use of …

TechCrunch 2026-06-30

Context & Ripple Effects

The Court’s location-privacy jurisprudence has moved from a 2016 appeals-court ruling permitting warrantless access to cellphone location data to its 2018 requirement that police obtain warrants for extended mobile-tower records. The geofence decision extends that arc to a more sweeping form of location search.

It matters because geofence requests can implicate many people whose phones were present in an area, rather than only a preidentified suspect. The ruling places that investigative technique within the same privacy framework the Court has applied to location records.

First-order effects

Law-enforcement agencies face tighter constitutional limits when seeking geofence data, while people whose location data may be swept into an investigation gain stronger privacy protection.
Providers holding or able to derive cellphone-location data will need to assess geofence demands against the Court’s new standard rather than treat them as routine investigative requests.

Second-order effects

Investigators may shift toward narrower, suspect-specific requests or other evidence-gathering methods when broad location sweeps cannot meet the required threshold.
The decision increases the compliance and litigation stakes for companies handling location data, because the scope and retention of those data can determine what is available to government requests.

Third-order effects

The ruling reinforces a legal trajectory in which digitally generated location trails receive Fourth Amendment protection comparable to other sensitive personal records, constraining investigative methods built around bulk identification.
If lower courts apply the reasoning broadly, disputes will increasingly turn on whether newer forms of app- and device-derived location data are sufficiently similar to cellphone records to require the same protections.

The trend: This is part of the continuing shift from rules designed for targeted physical searches toward constitutional limits on data-driven surveillance that can identify people at scale.

Discussion

@scotus_wire @scotus_wire on x
Justice Kagan delivered the opinion of the Court. Justice Gorsuch concurred in the judgment only. Justice Alito dissents, joined in part by Thomas and Barrett. Read the ruling here: https://www.supremecourt.gov/ ...
@aburkhartlaw @aburkhartlaw on x
Big decision on geofence warrants out of the Supreme Court today. SCOTUS rejects the third-party exception to the Fourth Amendment, which denies protection to records generated by or voluntarily exposed to a third-party, and finds that location data is indispensable to participa…
@hissgoescobra John Jackson on x
Thomas and Alito are just incredible at this point. Not a shred of independence or good faith left. Reading their dissents one cannot help but chuckle at the incredulousness of what they purport to believe. The Supreme Court must be reformed.
@repkeithself Rep. Keith Self on x
GET A WARRANT.
@repthomasmassie Thomas Massie on x
Important SCOTUS ruling. Get a damn warrant if snooping on cell phone locations!
@repkatcammack Congresswoman Kat Cammack on x
Just like the Constitution isn't à la carte, it doesn't have a digital exception. No fishing expeditions. No digital dragnets. The Fourth Amendment still applies. SCOTUS got this one right. 🇺🇸💪🏻
@austincampbell Austin Campbell on x
By the logic in this opinion, the BSA as it applies to modern payment systems is likely unconstitutional.
@realshlippi @realshlippi on x
@scotus_wire Do @Flock_Safety cameras next. If a private company sets up automated cameras that profile everyone that goes by them via an AI that can be queried without a warrant, you don't have any privacy either, even if it should be expected.
@scotus_wire @scotus_wire on x
🚨 The Supreme Court ruled that police conduct a Fourth Amendment search when they obtain data through a geofence warrant, holding that people have a reasonable expectation of privacy in their cell phone location data. [image]
Andrew Ferguson Andrew Ferguson on linkedin
Major privacy win in Chatrie. — Geofence queries are searches for Fourth Amendment purposes requiring a warrant. — https://lnkd.in/...
Heidi Saas Heidi Saas on linkedin
👁 Privacy WIN from SCOTUS! Chatrie v US, the Court “Held: Police officers conducted a Fourth Amendment search when they acquired Chatrie's location data …
Matt Todd Matt Todd on linkedin
Today in “your phone is not just a phone”: the Supreme Court decided Chatrie v. United States, an important Fourth Amendment case involving geofence warrants and Google Location History. …
r/FlockSurveillance r on reddit
Supreme Court Says Constitution Protects People's Location Data
r/politics r on reddit
US supreme court rules geofence warrants require constitutional privacy protections
r/technology r on reddit
In major privacy win, Supreme Court rules geofence warrants are protected by privacy rights

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