New leaks from Edward Snowden show the National Security Agency is tracking the locations of cellphones worldwide on a massive scale. The Washington Post reports the NSA is gathering around five billion call records a day that show the whereabouts of cellphone users around the globe. The spying allows the NSA to track individuals’ movements, as well as their personal relationships. The records are fed into a database that monitors hundreds of millions of devices. The data is retrieved by tapping into the cable networks of mobile phones worldwide. Of all the NSA spying programs exposed by Snowden, The Washington Post says the mobile location tracking “in scale, scope and potential impact on privacy … may be unsurpassed.”