Comment by llsf
Well, that is not just a payment solution. It can be linked to other things, and primarily to your Prime account, but it could be linked to other loyalty programs too.
So when you wave your hand, you get your Prime discounts, you pay and you get your points. Just by waving your hand. No need to reach for a phone, an app, a card, scan a QR code, etc.
The tech had some advantages. I used it every time at WF. I liked it.
Other PoS systems I used have no trouble linking my CC to my loyalty account.