June 07, 2001
Remote Keyless Entry: Staying a Step Ahead of Car Thieves
Remote Keyless Entry: Staying a Step Ahead of Car Thieves
That is why remote keyless entry systems adopted a more robust code system in the mid-1990's. Instead of using transmitters with fixed identification codes, these systems use rolling codes that change with every press of the transmitter's buttons. The list of stored rolling code numbers matches those stored in the receiver. Since the receiver expects no two signals to be identical, code grabbers that play back the same signal are simply ignored.
Posted by rshah at June 7, 2001 12:00 PM