Is a China-Style Mass Surveillance Coming to The West

China’s ambition to collect a staggering amount of personal data from everyday citizens is more expansive than previously known, Phone-tracking devices are now everywhere. Authorities are using phone trackers to link people’s digital lives to their physical movements. Devices known as WIFI sniffers and IMSI catchers can glean information from phones in their vicinity, which allow the police to track a target’s movements.