This document discusses RFID (Radio Frequency Identification) technology. It defines RFID as electronic labeling that uses radio frequencies to identify objects. RFID tags carry information like a serial number and are read by compatible readers when they pass through the reader's field. The document describes the components of an RFID system including RFID tags/inlays, chips, antennas, and readers. It provides examples of current RFID applications like credit cards, transportation cards, access control, and electronic toll collection.