Radio Frequency Identification (RFID) systems use radio signals for the identification of unique objects. An RFID tag contains a chip that is built to store roughly 16 Kbit of information.
RFID readers automatically detect the presence of RFID tags within an approximate 30-metre radius and update their status on a system. The range may vary depending on the types of tags, readers and the influence of surrounding environmental factors. RFID does not require line of sight operation and is ideal for tracking the movement of tools and personnel that are constantly moving in and out of a location.
RFID tracking technology is available in two distinct configurations: passive and active RFID.