This document discusses RFID (radio frequency identification) technology. It begins by defining RFID and its basic components, including RFID tags and readers. It then describes the three main types of RFID tags - active, semi-passive, and passive - and discusses their typical read ranges and costs. Several applications of RFID technology are outlined, such as supply chain management, electronic toll collection, and access control. Finally, the document presents the results of an RFID survey, finding that respondents believed RFID could be applied most in inventory control, logistics, and library management.