Research by the American Civil Liberties Union found that at least 13 federal agencies use StingRay technology, including the NSA, Homeland Security, the FBI and the army. In New York (and in many other states), both state and local police are equipped with Stingrays. An investigation by USA Today found that the technology was used even for routine crimes, like petty theft.
The ACLU found that the NYPD had used Stingrays more than 1,000 times between 2008 and May 2015 without any written policy on obtaining a warrant.