Fingerprint Credit

I find plastic credit to be extremely out-dated.  It makes little sense to me that I need to carry a piece of plastic with me so that stores know what account to charge.  Instead I think we need to create a system that works in a similar way but with your fingerprint.  When you scan your fingerprint the system could read your print, and from the result recognize who you are.  At this point a screen would display payment options that have been linked to your print.  After you've selected your payment method you'd be prompted to enter a security pin and the transaction would be complete.  This would be far more secure than a credit card, and would eliminate the need for users to carry a card.