Supreme Court Ruling Limits Government Use of Geofence Warrants

The U.S. Supreme Court has issued a ruling that significantly restricts law enforcement's ability to use geofence warrants, which allow police to demand location data from tech companies for all devices in a specific area at a given time.

The majority opinion held that individuals have a reasonable expectation of privacy in their cell phone location records, even when those records are held by third parties. Justice Elena Kagan wrote that police intrusion into this data, even for a limited time, violates constitutionally protected interests.

Justice Sonia Sotomayor noted that even short-term monitoring can reveal detailed information about a person's familial, political, professional, religious, and sexual associations—especially if the person visits sensitive locations like clinics, law offices, or strip clubs.

Privacy advocates praised the decision, though it stopped short of declaring geofence warrants inherently unconstitutional. Andrew Crocker, surveillance litigation director at the Electronic Frontier Foundation, said the court reaffirmed that location data revealing physical movements is protected under the Fourth Amendment.

Tech companies also supported the ruling. Matt Schruers, CEO of the Computer & Communications Industry Association, which counts Google and Apple among its members, welcomed the clarification that privacy rights persist regardless of the technology involved.

The dissent argued that the Fourth Amendment should be applied on an app-by-app or device-by-device basis, rather than a single standard for all location history. However, most justices agreed that a uniform rule was necessary to avoid future legal battles.