Why do you need a special device to do this?Why can't they just make a card that has it's own account number that is attached to an app. Within the app you can say where you want the funds to be pulled from. It would basically be like the google wallet card but instead of requiring a balance within your account, you can tell it where to pull the money from.
I think Google was trying to do that but it never happened.http://androidcommunity.com/googles-own-site-confirms-google-wallet-cards-coming-soon-20121106/
Coin is real guys.I just received my coin seems as good as they make it really is the same size as a credit card and loaded my cards easily.Will try out tomorrow to see how well it swipes in the real world.
My BIL says it only works 50-75% of the time. Otherwise, it gets rejected at the register. Still has to carry all his CCs with him.