Jisc TechWatch report explains RFID

Radio Frequency Identification (RFID) technologies allow the
transmission of a unique serial number wirelessly, using radio waves.
Attaching an RFID tag to a physical object allows the object to be
'seen' and monitored by existing computer networks and back-office
administration systems.

They are invloved in equipment security staff/pupil name badges and can be employed in a variety of ways a technology to watch. The range of possibilities are huge

Link to report site click here