File Under: APIs

Rails App Details Apple’s New ‘Passbook’ Web Service

Apple’s new Passbook app. Image: Apple.

Apple’s recent iPhone announcement contained one tidbit of interest for web developers — Passbook.

Passbook is a new app coming in iOS 6 that collects your boarding passes, movie tickets, retail coupons, loyalty cards, and more and stores them all in one place. Checking in for a flight? Just pull up Passbook and you’re done. Ditto for redeeming coupons, getting movie tickets and so on.

What makes Passbook interesting for web developers is that on the back end there’s a REST-style API for sending updates. The API allows developers to register web services which can then automatically update content on the “pass,” as Passbook entries are known. For example, you could update a coupon or add more credit to a pass based on a transaction on your website.

Passbook communication happens through Apple’s new PassKit web service. The PassKit API offers endpoints to get the latest version of a pass, control push notifications for a pass and query for passes registered for a device.

As with all things Apple, you’ll need a developer account to build anything, but if you’d like to get some idea of how

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the web service end of Passbook works, check out Mattt Thompson’s passbook_rails_example. Thompson has put together a basic Rails app that shows how to work with Passbook, including how to register devices, get the latest version of a pass, get serial numbers for passes on a device and unregister a device.

For more details, head on over to GitHub.