Amazon just updated their Amazon Mobile app for iPhone to now include barcode scanning. Basically, while you are out and about shopping, you can use your iPhone to scan the barcode of whatever you are thinking of buying, and Amazon will give you their price on the item. From there, you can purchase it and choose all your shipping options. Seriously, we have no idea what took Amazon so long to implement this, but it’ll definitely be a money saver. You can download the Amazon Mobile app for free.