pnorth writes "A hacker has shown how easy it is to clone US passport cards that use RFID by conducting a drive-by test on the streets of San Francisco. Chris Paget, director of research and development at Seattle-based IOActive, used a $250 Motorola RFID reader and an antenna mounted in a car's side window and drove for 20 minutes around San Francisco, with a colleague videoing the demonstration. During the demonstration he picked up the details of two US passport cards. Using the data gleaned it would be relatively simple to make cloned passport cards he said. Paget is best known for having to abandon presenting a paper at the Black Hat security conference in Washington in 2007 after an RFID company threatened him with legal action."
Apparently this is a little unfair — he sniffed the data, he didn't actually make a fake passport.