Testing ecash payments with bearer tokens stored on a physical card. You can see the card being topped up with one phone and pay the other. It feels incredibly fast and smooth. 

Tap to pay UX with ecash is as good as it gets for payments. You're literally handing over the money.
https://video.nostr.build/41b9c7bb2306a6b21249a80f1e4d986b4c5663df3f9c60e8fc84ba33abf2ca46.mp4