Until now, New York City's police department hadn't disclosed any information about whether or not it used so-called Stingrays to monitor cell phone activity. In response to an NYCLU (NYCLU) request, the NYPD admitted that it used the devices over 1,000 times between 2008 and May 2015. What's more, NYPD doesn't have a written policy in place that guides how the tech should be used. As a refresher, Stingrays create a fake 2G cellular network that can be used to track the locations and monitor call or text activity in a certain area. Even when a specific mobile device is targeted, information from other phones in the area is still accessible.