In case you missed it from /.
< http://it.slashdot.org/article.pl?sid=09/02/02/2224255 >
Cloning passport card RFIDs in bulk for under $250
Ethical hacker Chris Paget demonstrates a low-cost mobile device that
surreptitiously reads and clones RFID tags embedded in United States
passport cards and enhanced drivers’ licenses.
Mentions of GNU Radio and Ettus are at 4:43 - 4:47.