Abstract: A new add-on vehicular system is capable of responding to large area or nation-wide commands over paging networks, to remotely foil the unauthorized use or theft of a vehicle or a fleet automobile or a group of fleet vehicles, as well as to help the recovery of stolen vehicles. The preferred embodiment of the system comprises a paging receiver and decoder, a microcontroller with embedded programmable software and memory and a vehicular systems control interface. The system does not require central monitoring systems, or portable controls or vehicular user set controls or portable key chain controls or keypads or cellular phones or separation of vehicular transceivers from owner carried transceivers to activate the system. In a second embodiment, a two-way radio paging approach is employed in the system to expand its capabilities and to additionally provide remotely controlled transmission of data from vehicles, including data pertaining to the position coordinates of the vehicle.

Abstract: A new add-on vehicular system is capable of responding to large area or nation-wide commands over paging networks, to remotely foil the unauthorized use or theft of a vehicle or a fleet automobile or a group of fleet vehicles, as well as to help the recovery of stolen vehicles. The preferred embodiment of the system comprises a paging receiver and decoder, a microcontroller with embedded programmable software and memory and a vehicular systems control interface. The system does not require central monitoring systems, or portable controls or vehicular user set controls or portable key chain controls or keypads or cellular phones or separation of vehicular transceivers from owner carried transceivers to activate the system. In a second embodiment, a two-way radio paging approach is employed in the system to expand its capabilities and to additionally provide remotely controlled transmission of data from vehicles, including data pertaining to the position coordinates of the vehicle.