The gadget that can hack any CAR: Terrifying £12 tool can remotely control headlights, locks, steering and even brakes. Gadget is fitted to the Controller Area Network (CAN) of a modern car. Depending on the make of car, the CAN controls lights, locks and brakes. Hackers claim it can be fitted to any car's network 'within five minutes'. CAN Hacking Tool (CHT) runs malicious code into the car's system. Researchers in the U.S. previously hacked the software in a Toyota Prius.