The study used cellphone pings to track the actual speed of cars when the drivers were stopped. Cell phone GPS data collected from inside moving vehicles shows what civil rights groups have long ...

An unsettling new technique for surveillance can make use of the most minute scraps of data to listen in on cell phones calls.

Washington's state police agency has purchased access to cell phone data from more than a million cell phone users to find areas where people drive fast or text often ...

A company has been quietly tracking cellphone data from millions of drivers to monitor driving behavior, and this data is now being used by Washington State Patrol to prevent deadly crashes.

A company has been quietly tracking cellphone data from millions of drivers to monitor driving behavior, and this data is now being used by Washington State Patrol to prevent deadly crashes.