"The National Security Agency is gathering nearly 5 billion records a day on the whereabouts of cellphones around the world, according to top-secret documents and interviews with U.S. intelligence officials, enabling the agency to track
“The National Security Agency is gathering nearly 5 billion records a day on the whereabouts of cellphones around the world, according to top-secret documents and interviews with U.S. intelligence officials, enabling the agency to track the movements of individuals — and map their relationships — in ways that would have been previously unimaginable.”
See the full article: NSA tracking cellphone locations worldwide, Snowden documents show
(Washington Post, link)
See also: How the NSA is tracking people right now (pdf)
And see: Example of current records (pdf): Note transfer to MARINA:.Marina is the primary storage and analysis tool for “metadata.”