Passbook allows users to store boarding passes, tickets, coupons, gift cards, membership cards on their iPhone. Passbook eliminates the need to carry a wallet full of membership cards and instead allows users to have their phone scanned. When a user wakes their iPhone or iPod touch, passes appear on ...

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passbook passes updates on different devices

Theoretically, say I have a pass on passbook that gets updated about once a day or so with new information. If I share this pass with a friend of mine, will he also get the updates I'm getting? Or ...