I fail to see what major advantage a phone based payment system bring to me, as a customer. Its neither faster, nor more mobile nor cheaper than a credit card for me. I fail to see any kind of improvement over a tapping based credit card. I have my credit card and for almost all of my purchases, I just need to tap it and I am done. Heck, I can say scanning a QR code is more inconvenient to me. It may be better than carrying cash, but then thats all about it. Otherwise a credit card is better. Not to mention, a credit card is universally acceptable.