Kaykaykay said:Yes, I've used iPhone and my Android phone for boarding passes, Starbucks checkouts, membership discount scanning at Barnes & Noble.
Passbook has potential, but it will take more robust participation to make it really worthwhile. They've got to iron out how it works before turning off too many users. Already online, there are posts about how frustrating it can be to use.
The problem before was that each program required it's own app. Passbooks purpose is to integrate all that into one app. If they get enough businesses signed on it will do very well.