I’ve discovered a very useful service and app that keeps your wallet thin (or only thick because of the large amount of money in it 😉 ): stocard
The idea behin it is that you enter or scan your bonus cards like s.oliver, payback, adac, … into your phone and show the barcode on the phone instead of the card at the cashier. Seems a pretty cool idea to me. Available for Android and iOS.
Anybody has any experience with it? I just entered / scanned my cards but did not show it yet.