I know what you guys are saying but im not sure if id want a hacked version of a payment system. For me, thats something that should stay officially done and constantly updated ya know? Id be fine with isis or wallet, if i use it that is. I did notice soda machines at my school that accept nfc stuff, not sure if its wallet or isis though.
Very good point...hacked angry birds is one thing, but when you're talking about bank accounts and credit cards, you want that to be as secure as possible.