An apparatus and method and provided for tracking the location and direction of an individual utilizing a direct radio frequency link between a mobile target and a mobile monitor. The apparatus and method utilize a mobile target device which may be affixed to an individual to be tracked utilizing a secure...http://www.google.de/patents/US20040087314?utm_source=gb-gplus-sharePatent US20040087314 - Apparatus and method for tracking the location and position of an individual
