Starbucks Card Mobile a hit: 3 million have paid with iPhone, BlackBerry

The Starbucks Card Mobile app, which allows customers to pay for a cup of ‘joe with a barcode displayed on either an iPhone or a BlackBerry smartphone, has been used 3 million times since its launch in January.

Once a customer has linked their Starbucks card to the app, they simply have to hold the screen up to a scanner that reads the barcode and charges their card account for the order accordingly. Starbucks says testing has shown this to be the fastest way for customers to pay.