The Supreme Court hears arguments Monday about a relatively new law enforcement technique that allows police to tap into giant tech-firm databases to find out who was near the scene of a crime and may...

The Supreme Court on Monday grappled in Chatrie v. United States with a Virginia man’s challenge to the use of a “geofence warrant” – a warrant that directed Google to provide location data for cellph...

The justices will weigh whether geofence warrants — an investigatory tool that compels companies to disclose data from cellphones and other devices at a specific place and time — violate the Fourth Am...