The Obama administration earlier this month petitioned the Supreme Court in support of a federal court ruling that allowed police searches of cell phones records without a warrant.
They discovered that the Apple iPhone and iPad were recording user locations in a hidden file, detailing every step of their whereabouts and keeping a history of it for nearly a year. Apple has since changed that policy.
http://www.foxnews.com/politics/2013/08/21/cell-phone-data-latest-threat-to-privacy/Which is more important to the federal government? Where you have been, or your Bitcoin transactions?