Acting head of Immigrations and Customs Enforcement Thomas Homan told Sen. Ron Wyden the agency does not use cell-site simulators—a type of surveillance gear often referred to as a “Stingray” that can track down a specific mobile device by emulating cell phone towers—to locate undocumented immigrants.
Source: Gizmodo – ICE Says It Doesn’t Track Down Undocumented Immigrants Using ‘Stingray’ Devices