Wanna see how easy it is to steal data off a NFC chip ? Protect yourself from electronic pickpocketing - YouTube[YT][/YT]
How does Google Wallet protect my payment credentials?
Your payment credentials are stored in a chip called the Secure Element contained within your Nexus S 4G. The Secure Element is isolated from your phone’s main operating system and hardware. Only authorized programs like Google Wallet can access the Secure Element to initiate a transaction. Additionally, because Google Wallet enforces a PIN, the only way to transmit payment credentials is if you first enter the PIN.
*Looks at credit cards, sees the little radio signal picture :-\
Shoot.