Supreme Court ruling guts government’s use of geofence warrants

The Fourth Amendment protects a user’s “location history,” the Supreme Court ruled Monday. The same logic already applied to a cellphone’s tracking, and the high court found “no good reason exists to reach a different result for Location History” collected by third parties like Google. Split 6-3, the majority agreed that the government needs a warrant and must show reasonable cause to turn a phone's location-tracking services into a government surveillance tool.