This is an alternative to using near field communications (NFC) to pay for the coffee, this app works by producing a barcode that is simply scanned at the till for payment. The app can be preloaded with credit from PayPal or a credit card, either way it’s much better than getting cash or cards out every time you need that caffeine fix!
These are the details on this free app for Android phones from Starbucks;
It’s the fastest way to pay, track your Stars, and reload your Starbucks Card! A Starbucks Card is the fastest, most convenient way to pay at Starbucks. And Starbucks for Android is the perfect companion to your card. Your Android phone will display a barcode that you use just like your card to make purchases at Starbucks.
This is a free app and it can be downloaded now from Google Play
Source [Pocket Lint]