Originally Posted by nevansm

The advantage of using passbook are quickness and ease. Once you get close to the movie theater lets say, the screen will automatically load your ticket to scan at the theater. The same would be true with a boarding pass or a hotel key. Instead of digging through your pocket or wallet, you just unlock your phone and there it is. To me I always have a difficult time with getting the key out of my wallet as my wallet is a bit odd. I personally like the concept and can't wait to see it implemented.