In major privacy win, Supreme Court rules geofence warrants are protected by privacy rights

The U.S. Supreme Court ruled 6–3 that authorities must obtain a search warrant and show probable cause before compelling tech companies to provide historical geofence cellphone location data, finding individuals retain a reasonable expectation of privacy in location information; the decision stems from Chatrie v. United States and narrows (but does not ban) reverse geofence warrants while leaving implementation and effects on prior cases to lower courts.