12/04/13: The Washington Post reports the NSA is gathering nearly 5 billion records a day on the whereabouts of cellphones around the world, according to top-secret documents and interviews with US intelligence officials, enabling the agency to track the movements of individuals — and map their relationships — in ways that would have been previously unimaginable. The records feed a vast database that stores information about the locations of at least hundreds of millions of devices, according to the officials and the documents. New projects created to analyze that data have provided the intelligence community with what amounts to a mass surveillance tool. The NSA does not target Americans’ location data by design, but the agency acquires a substantial amount of information on the whereabouts of domestic cellphones “incidentally,” a legal term that connotes a foreseeable but not deliberate result. In scale, scope and potential impact on privacy, the efforts to collect and analyze location data may be unsurpassed among the NSA surveillance programs that have been disclosed since June. Analysts can find cellphones anywhere in the world, retrace their movements and expose hidden relationships among individuals using them. US officials said the programs that collect and analyze location data are lawful and intended strictly to develop intelligence about foreign targets.