One of the coolest iTunes 11 features has got to be the new redemption system. It allows you to scan gift codes using your Mac's camera system. As the screen shot above shows, all you have to do is hold up your iTunes barcode and let your camera do the work. No more laborious typing of barcode-supported gift cards is needed any more.
Click Use Camera and then use the interactive camera feed to hold up and scan your card. You can only redeem cards that have a box around the code letters, as you see in the screenshot above. Here is Steve Sande redeeming himself. He isn't actually a gift card, but he pretends to be one on alternative Sundays.
