Police departments across the U.S. are using a “Stingray” device to track and spy on cellphone usage. This surveillance is happening without any clear oversight, without the use of search warrants, and to innocent bystanders, as well as suspected criminals. This AJ+ animation explains how it works. For more on StingRay in your state: https://www.aclu.org/map/stingray-tra... Subscribe for more videos: / @ajplus Like us on Facebook: / ajplusenglish Download the AJ+ app at http://www.ajplus.net/ Follow us on Twitter: / ajplus