Usability Views Article Details  home | timeline | recent | popular | e-reports | userati | about this site Will a new batch of wireless identification devices change the world? (05 Sep 2003) In the simplest terms, RFID tags are radio devices that respond to a scanning unit's signal when they're brought near the scanner by transmitting back a digital code with a serial number that uniquely identifies the tag. Article URL: http://slate.msn.com/id/2087976/ Read 21 more articles from Slate sorted by date, popularity, or title. Next Article: THE Zoom Demo This site is a labour of love built by Chris McEvoy