RFID: What it is and who's using it for what.

Radio Requency Identification tags are used by Walmart and the Department of
Defense to track supplies. RFID tags are also used by hospitals, prisons
and schools to track people. Libraries use them to track books and soon,
they'll be in passports and maybe even on our drivers licenses. Come learn
how the technology works and who's got big plans for RFID in our big brother
future.