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...http://www.google.de/patents/US6665613?utm_source=gb-gplus-sharePatent US6665613 - Method of and apparatus for dynamically GoeFencing movable vehicle and other equipment and the like
