US Immigration and Customs Enforcement (ICE) has been using a cell-site simulator, also known as a Stingray, to track down individuals. The device tricks phones into connecting to it, allowing ICE to locate the target. The use of this technology has raised concerns about privacy and surveillance, particularly when used near protests or in areas with high foot traffic. ICE has a contract to purchase nearly $1 million worth of cell-site simulator vehicles and has an active contract with the original Stingray manufacturer for equipment to determine the location of targeted mobile handsets.