Abstract: A technique and apparatus for dynamically establishing and varying GeoFencing of a GPS-processor equipped vehicle or the like by providing specialized software and firmware at the vehicle processor to enable internal calculation of shape and size of GeoFences about the vehicle upon commands of the control center station, and without the necessity for such calculation or data point information transmission from the station.

Abstract: In a signal receiving apparatus as, for example, that used in the monitoring in a stolen vehicle transceiver of the presence of sequential transmitted signals specifically requesting that transceiver to respond to enable tracking the vehicle, wherein the receiver is powered by a consumable energy source of predetermined budgeted lifetime and adapted to operate between quiescent energy-saving and energized energy-consuming states for performing such sequential signal monitoring, desired signal identifying and related functions, a method of and apparatus for insuring the availability of energy to be able to perform such functions within said predetermined budgeted life time, that comprises, allocating budget time intervals for periodically operating the receiver intermittently in energized state to enable the performing of such functions as monitoring for such signals; and, in the event of inordinate energy consumption during such operation, that, if continued, would render the operation out of overall allocate

Abstract: A vehicle-tracking radio transponder used in stolen vehicle recovery systems and in which the same transponder is also synergistically accessed for panic or emergency operator activation and for sensed unauthorized moving or starter circuit tampering independently of and without interfering with the stolen vehicle recovery command signal control of the transponder.

Abstract: A vehicle theft prevention/security system having a concealed module capable of learning, and then recognizing the voice of the owner or authorized operator. The module controls (switches) the operation of a concealed relay that normally interrupts current to the starter solenoid or ignition system unless the owner or authorized operator speaks into a conveniently mounted microphone within the vehicle. The module may be programmed to recognize the voice of the owner or authorized user, regardless of the spoken word(s), or the module may be programmed to recognize only a certain password spoken only by a certain owner or authorized user. Once the module recognizes the owner or authorized user, the relay then switches to provide current to the previously interrupted ignition system or starter solenoid. The module provides audio output/feedback to the owner or authorized user during operation.