Well, I remember when they were developing it at the time they were announcing Apple Pay, and it's system seemed pretty cumbersome and inconvenient compared to using a credit card, tap to pay system, Apple Pay or just good old cash. Honestly didn't think it or any of the similar systems would last that long. Apple Pay on the other hand is fantastic. I can leave the house with nothing but the clothes on my back and my Apple Watch and purchase at almost any retailer I come across. No phone, no wallet, no car keys or even that annoying keychain scanning thing some stores give you. Of course none of those retailers are Walmart as they just aren't in the Los Angeles area. Only in the surrounding areas which would be inconvenient for me to travel to. As for them being the largest retailer in the country, that surprises me. I would have thought Amazon would have destroyed them years ago. Amazon has a larger selection of the same cheap crap and they will bring it to your door... a lot of the time the same day as you ordered it. I guess what keeps them hanging on is that fact that, in many small towns, they simply destroyed all the competition leaving residents no other choice but to shop there... and older people who don't like using the internet. All I know is I haven't seen one in a long time.