Odin Technologies Aims to Be the Chief of RFID (washingtonpost.com) washingtonpost.com - RFID tags, the dime-sized devices that can track inventory from the factory to the store, are being embraced as one of the hottest of new technologies. But Patrick J. Sweeney II likens most available applications of RFID, or radio frequency identification, to the user-unfriendly personal computers of the 1980s: a blank screen and a command prompt.