FILE - This undated file photo provided by the U.S. Patent and Trademark Office shows the StingRay II, a cellular site simulator used for surveillance purposes manufactured by Harris Corporation, of Melbourne, Fla. Police departments across the country use military-developed technology that can track down suspects by using the signals emitted by their cellphones. Civil liberties groups are increasingly raising objections to the suitcase-sized devices known as StingRays that can sweep up cellphone data from an entire neighborhood. (U.S. Patent and Trademark Office via AP, File)
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