iOS 6 users with iPhones and iPod touches can now add the Starbucks app to Apple’s Passbook, thanks to a new update. Existing Starbucks Card holders can add their cards to the app for phone payment and rewards, while users without cards can sign up for a new mobile card. Up to 10 “favorite stores” can be added to the app — your device can use geofencing to recognize that you’ve entered one of those stores, and load your card accordingly. To add the card to Passbook, sign in, then go to My Card>Manage>Add Card to Passbook. Note that while the Starbucks app is not yet formatted for iPhone 5, it runs properly in the center of the new iPhone’s taller screen.