U.S. planes spy on American phones
These devices typically trick phones into sharing its location data and revealing the phone's identity. CNNMoney has independently confirmed that at least one federal agency, Immigration and Customs Enforcement, has used this technology on planes since 2010, according to government documents. The planes carry a box that serves as a dummy cell phone site. That device mimics actual towers, duping nearby cell phones into connecting to it instead of a real phone company tower.