Abstract: An alarm system for use with a vehicle is disclosed herein and operates between two primary states, an alarm ready state and an owner-identification state, depending upon certain sequential events relating to the positions of the vehicle's normal entry ways and key actuated ignition. In order to activate the system, a vehicle entry signal is produced in response to the opening of any entry way into the vehicle, however, only during the period when this system is in its alarm ready state. The entry signal in turn initiates an alarm signal for activating an alarm but only after a delay sufficient to allow the owner to identify himself by placing the system in its owner-identification mode, thereby cancelling initiation of the alarm signal.