The US Justice Department issued guidelines for StingRay Surveillance devices, new rules define aim to ensure privacy protection and transparency. Stingray devices are used by law enforcement to track criminals, in the majority of cases without obtaining court orders. The new policy requires law enforcement and intelligence agencies to obtain a court authorization or warrant to use the StingRay technology in their operations to ensure the respectful of individuals privacy. The agencies will have to present an annual report on the use of the Stingray Technology.”]
Source: https://securityaffairs.co/wordpress/39904/cyber-crime/doj-stingray-policy.html