(CBS) — Activists who have been protesting in Chicago claim they have proof that police have been using so-called “Stingray” technology to eavesdrop on their phones, reports WBBM’s Mike Krauser.
The technology essentially puts up a wall between the user’s phone and their provider, forcing phones in the immediate area to send data to the police instead of the nearest cell towers.READ MORE: At Least 4 People Killed, 17 Wounded In Weekend Gun Violence In Chicago
Activists have posted photos online of a City of Chicago marked emergency management vehicle with what looks like radar on top following protestors.
In October, the Chicago Police department acknowledged that it had purchased cell-phone interceptor devices back in 2008. This included IMSI Catchers, sold under names like Stingray — hence the name.