Radio frequency identification (RFID) is a method of remotely storing and retrieving data using devices called RFID tags/transponders. An RFID tag is a small object, such as an adhesive sticker, that can be attached to or incorporated into a product. RFID tags contain antennas to enable them to receive and respond to radio-frequency queries from an RFID transceiver.  The use of RFID is rapidly becoming established in a wide variety of industries.