Google Wallet is perfect for scanning loyalty program barcodes and QR codes. However, one supermarket I sometimes go to struggles to read phone screens. Frustrated, I opted for a low-tech solution. I attached the loyalty card to my eco bag with a zip tie, and all I have to do now is put the bag first on the conveyor belt to grant some rewards. 

The best solution is the one that works for you. It’s even better when It’s simple to implement and use.