The PhoneStamp store app, is an app to help small businesses create and maintain long term relationships with their customers. The store app is the part of the system that the store will use to manage bonus cards and prepaid cards from behind the counter. By using the built-in QR-reader the store app will read the QR code on the PhoneStamp consumer app, and thereby the store will be able to give the consumer bonus points, use prepaid card as means of payment etc.