What is RFID?

RFID or Radio frequency identification is a method of identifying and tracking objects... The RFID tag provides the reader with a sequence of data that encodes a unique identity for that object... Once the identity of the object is known, the reader also knows its location and the time... This information - identity, location, and time - can be combined into a larger set of data, an RFID transaction, and passed to applications for further processing...