The Dunkin' Donuts iPhone app now integrates with Passbook, the software-based mobile wallet that stores payment cards and tickets from other mobile apps and typically relies on displayed bar codes for redemption.

The app's version 2.5 release on Feb. 14 also includes native support for the larger iPhone 5 screen and a feature that lets users recall and resend a digital gift card, "in the instance you mistype your recipient's address or phone number," according to the app's release notes on the iTunes Store.

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