Court rules Stingray use without a warrant violates Fourth Amendment

Stingrays work by pretending to be a cell tower and once they’re brought close enough to a particular phone, that phone pings a signal off of them. The Stingray then grabs onto that signal and allows whoever’s using it to locate the phone in question. These sorts of devices are used by a number of different agencies including the FBI, ICE, the IRS as well as police officers. The use of cell-site