RFID is a technique that transmits the identity (unique code embedded in a chip) of a person or item wirelessly, using radio waves.  To expedite identifying information retrieval, the RFID device may be scanned at airports, border crossings and other secure points of entry/exit.  Raised awareness of advances in RDIF technology increased concerns among many as to the abilities of both authorized users and criminal elements to track the movements of individuals, and decipher personal and financial information. View additional RFID Blocking Cases