A security system

摘要

A security system suitable for a vehicle 10 is disclosed in which a security controller 12 communicates with one or more remote transponders 14. The security controller 12 includes a memory 16 in which is held recognition information which ties that security controller 12 to that vehicle 10 and the or each remote transponder 14. In the event that the security controller 12 requires replacement, means are provided for copying over the recognition information from the original security controller 12 into a replacement security controller 120.