"Police don't know what it is?" How stupid are they? Most newer cars, especially high end cars, use a key-less entry system. Like a key fob that transmits a radio frequency that allows a person with the fob to either push a button on the fob to unlock or just grab the handle and the door automatically unlocks. That same fob allows a key-less ignition to start the car. My 2006 Corvette has such a system, and they are very popular in high end cars. This box is just a rotating frequency transmitter and they allow it to cycle through a particular makes assigned frequencies till they hit the one for that car and unlocks it.
