Stanford University study found that smartphone metadata can reveal a surprising amount of personal detail. Researchers used a combination of automated and manual processes to understand just what’s being revealed. The researchers set out to fill what they consider knowledge gaps within the National Security Agencys current phone metadata program. Researchers at MIT and Oxford University have shown that the location stamps on just a handful of Twitter posts can be enough to let even a low-tech snooper find out where you live and work. Preliminary versions of the work have already played a role in federal surveillance policy debates.”]