FAC suit against San Diego yields previously secret records on police use of invasive cell phone surveillance tool
The Stingray is a controversial cell phone surveillance tool used by police departments in major US cities, including Los Angeles, San Francisco, Oakland, San Jose and San Diego. Also known as an “IMSI catcher,” the Stingray operates by mimicking a cell phone tower, which causes cell phones in the vicinity to transmit information revealing their owners and the phones’ exact location. In 2015 FAC filed a public records suit against the San Diego Police Department