Add Yahoo as a preferred source to see more of our stories on Google. Where your smartphone has been is available for sale. cofotoisme/iStock via Getty Images If you use a mobile phone with location ...

Nevada quietly signed an agreement earlier this year with a company that collects location data from cellphones, allowing police to track a device virtually in real time — all without a warrant.

The Supreme Court heard arguments Monday on whether police can use cell phone location data, known as geo-fencing, to help ...

Geofence warrants give cops leads but create false positives and have spurred legal challenges.

It’s been over a year since 35 ACLU affiliates filed over 380 public records requests with state and local law enforcement agencies seeking information about their policies, procedures, and practices ...

Many law enforcement agencies across the U.S. track mobile phones as part of investigations, but only a minority ask for court-ordered warrants, according to a new report released Monday by the ...

Nevada quietly signed an agreement earlier this year with a company that collects location data from cellphones, allowing police to track a device virtually in real time — all without a warrant. The ...

Nevada quietly signed an agreement earlier this year with a company that collects location data from cellphones, allowing police to track a device virtually in real time — all without a warrant. The ...