I've just come across this http://news.passkit.com/2012/12/16/contest/
and see that PassKit are giving away iPhone 5 and countless PassKit accounts. You enter by downloading a Entry Pass and answering some straight forward questions. The Pass is stored in Passbook and then when they have decided the winner they say they notify you using a Push update to the Pass. It seems a pretty ingenious way to use Passbook - and also get the chance to win an iPhone 5. Has anyone used this yet?
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