PAY RIGHT FROM THE APP WITH A VIRTUAL DD™ CARD.Dunkin' Donuts is a free download from the App Store. [Direct Link]
Use the app to pay for all your purchases. You can either add a plastic card or purchase a virtual card via the app. Simply tap the DD Card you wish to use and present the barcode to the DD crew member to be scanned, and you’re good to go. You can also manage and reload your DD Card right from the app.
APPLE PASSBOOK INTEGRATION
Now you can purchase a virtual card via the Dunkin’ App and add it to your Passbook wallet.
Apple will introduce new versions of iOS and OS X at its annual developer's conference.