SENSORMATIC

ELECTRONIC ARTICLE AND OBJECT SURVEILLANCE AND DETECTION EQUIPMENT AND TECHNIQUES UTILIZING TRANSMITTED RADIO FREQUENCY OR MICROWAVE SIGNALS TO ESTABLISH A SURVEILLANCE OR DETECTION ZONE IN WHICH THE PRESENCE OF SPECIAL TRANSPONDERS IS SENSED BY RECEIVERS DETECTING RERADIATED SIGNALS FROM THE TRANSPONDERS, THE GOODS AND EQUIPMENT BEING ADAPTED TO COMMUNICATION, NAVIGATION, AND SECURITY USES, PARTICULARLY TO PREVENT PILFERAGE OR SHOPLIFTING