3 ms·
isn’t the car keyless go system the transponder and the key fob the receiver or vice versa?
by MuffinFlavored 3y ago
isn’t the car keyless go system the transponder and the key fob the receiver or vice versa?
- topspin 3y agoTypically the fob is the transponder. The fob has a tiny battery: frequent transmissions would rapidly kill that battery. The car has an ample battery, so it transmits periodically and detects the responses from the fob transponder. For the purposes of a "relay attack" this doesn't actually matter: all else being equal you could devise a relay system that works regardless of the roles of car and fob in the protocol.