RFID BASED PROXIMITY SENSOR AND ALERT SYSTEM FOR FUGITIVES, SEX OFFENDERS, MISSING SOLDIERS AND THE LIKE

摘要

A robust, wireless sensor system providing a low cost method of tracking people such as sex offenders, child molesters, etc., after their release from prison or other confinement, which protects society from such individuals and lessens their ability to repeat such offenses. The system and method of the invention can also be used to locate kidnapped persons, people buried in snow avalanches, missing or dead soldiers, etc. The system utilizes RFID tags placed on people or in specified locations and RFID transmitters that can resonate with the tagged people or objects. Such a trigger recognition arrangement combined with communication of information from the triggering can be used to obtain a signal alerting the transmitter carrier that the tagged object or person is nearby. The triggering action can also initiate a sequence of information transfers in which the transmitter broadcasts to a central command that a particular transmitter is or was in proximity to a specific object or person, and allows the command center to order the dispatch of authorized personnel, such as policemen, military personnel, emergency rescue workers, etc. to the triggering location.