A system and method are provided for communicating between a person, object, and/or vehicle carried transceiver and a monitor station to locate and track the movement of the same for security or anti-crime purposes. A portable computing and communication device carried by a person or located (hidden)...http://www.google.es/patents/US5731785?utm_source=gb-gplus-sharePatente US5731785 - System and method for locating objects including an inhibiting feature
System and method for locating objects including an inhibiting feature
