Strattec Security Corp.’s i-Guard antitheft solution is a radio frequency identification (RFID) electronic immobilizer system that can safeguard any size machinery from unauthorized use. A unique electronic code is programmed into the engine module and into a chip in the key or a fob. A small antenna transmits the code between the two components by way of difficult-to-mimic radio frequencies. If the engine and key or fob codes don’t match, the vehicle will not start.