The FBI’s use of cell-phone tracking technology will go on trial this afternoon.
At issue is stingray devices, which use legitimate cell towers to connect to mobile devices, CNET reports.
Civil libertarians argue the devices violate Americans’ Fourth Amendment right to reasonable privacy and want to impose limits on them, in the same way that challenges forced restrictions on warrantless use of thermal imaging devices, CNET wrote.
Federal authorities say stingray devices are a useful tool in cracking crimes.