Passbook may be one of the most underrated technologies on the iPhone. In theory, it lets you collect your boarding passes, movie tickets, retail coupons, and loyalty cards all in one place. In reality, it isn’t supported by too many retailers, many of whom already have their own system of handling these types of passes.
In addition, many iPhone users don’t know how to get apps that support Passbook, as the only way to find a special list of apps that are supported by the service is to open the Passbook app itself. If you’re one of those users, here’s how to get some great apps on your iPhone and carry a few less bits of paper and plastic ephemera around with you.