The U.S. National Security Agency collects five billion records every day tracking cell phone movements around the world, according to documents leaked by former NSA contractor Edward Snowden. In ...

Immigration and Customs Enforcement will soon be tracking cell phone data. The immigration law enforcement agency has bought access to an “all-in-one” surveillance tool that gives it updated location ...

Cell-phone tracking data shows worker visits to San Francisco offices have been rising, particularly in areas popular with artificial-intelligence companies and venture capitalists, a real-estate ...

Capitalizing on all the information we put into our cell phones, Verizon Wireless is selling all our app usage and location information to marketers, reports CNET's Declan McCullagh. Part of what it ...