Tyketto writes The US Department of Justice has been using fake communications towers installed in airplanes to acquire cellular phone data for tracking down criminals, reports The Wall Street Journal. Using fix-wing Cessnas outfitted with DRT boxes produced by Boeing, the devices mimic cellular towers, fooling cellphones into reporting "unique registration information" to track down "individuals under investigation." The program, used by the U.S. Marshals Service, has been in use since 2007 and deployed around at least five major metropolitan areas, with a flying range that can cover most of the US population. As cellphones are designed to connect to the strongest cell tower signal available, the devices identify themselves as the strongest signal, allowing for the gathering of information on thousands of phones during a single flight. Not even having encryption on one's phone, like found in Apple's iPhone 6, prevents this interception. While the Justice Department would not confirm or deny the existence of such a program, Verizon denies any involvement in this program, and DRT (a subsidiary of Boeing), AT&T, and Sprint have all declined to comment.