Yesterday, I updated my iPod Touch 4 (2010) to iOS 6. At first, I had trouble connecting passbook to the App Store, but managed to make it work. Today, I updated my fandango app, purchased a couple movie tickets, transferred the scan code to passbook and showed it to the ticket taker. He seemed knowledgeable and aware that people would be using passbook in iOS 6, and wasn't surprised at all. Although, he had minor difficulties getting his scan gun to read the scan code for about 30 seconds, he managed to make it work. I just thought some people here would like to hear a real world experience with it.