Passbook is one of those iOS apps that is better in theory than in reality. The concept is a version of the digital wallet. Instead of holding your money, it holds on to all those plastic loyalty cards, tickets for movies and concerts, even airline boarding passes. Easy digital access to those bits of paper you’re always fumbling to find. Neat.
In reality, Passbook is a barely there app that only works in conjunction with a limited number of partners. If you fly often or go to more than a few ticketed events per month, it’s a handy app. But this isn’t an optional download, it’s part of the official iPhone landscape so it ought to serve more people than that.