A cell site simulator (also known as a stingray) emulates a cellphone tower and forces cell phones to register their location and identifying information with the stingray instead of with real cell towers in the area. Stingrays can track cell phones whenever the phones are turned on, not just when they are making or receiving calls. Stingrays force cell phones in range to transmit information back at full signal, consuming the battery faster. When in use, stingrays evaluate all the cell phone handsets in the area, which means that large numbers of innocent bystanders' location and phone information are captured.