RFID Olympic tickets good for security but potential mayhem at the turnstiles

http://www.reuters.com/article/blogBurst/domestic?type=domesticNews&w1=B7ovpm21IaDoL40ZFnNfGe&w2=B9IYAiV6g03xWUXstkq1JR&src=blogBurst_domesticNews&bbPostId=CzAMpqMNfmrfWCzFAfLepaiMVYCzAU3bw6tniWfBCLWcLM5QcYK&bbParentWidgetId=B9IYAiV6g03xWUXstkq1JR

Mifare Crypto RFID Completely Broken

http://www.hackaday.com/2008/01/01/24c3-mifare-crypto1-rfid-completely-broken/

RFID Reader Denial of Service Attack

http://www.youtube.com/watch?v=k_PhFjUviBw