How Active RFID Works
Active RFID is different from UHF RFID, in that Active RFID tags are powered by batteries in the tag, and can be detected from up to approximately 1,500'. An example of Active RFID is toll road technology that detects passing vehicles from a distance and at high speeds.
RFID antennas can be placed at doorways, at choke points, at gates or outside of facilities and on facility grounds. Any tag detected updates the computerized database as to the location of the person and/or item(s) detected.
Real-time tracking of assets, personnel mustering and mobile detection systems are common applications for Active RFID technology. Whereas UHF RFID tracks at specific choke-points, Active RFID tracks real-time, anywhere.