A federal judge in New York ruled for the first time on Tuesday that the use of a surveillance device to capture cell phone location information constitutes a warrantless search. In the case, Lambis v. United States, government officials used a stingray device to track a drug suspect. Stingrays, also known as “cell site simulators,” force cell phones in the area to transmit signals that pinpoint the user’s location through cell site location information, or CSLI data.