Ah, thanks for that. I had no idea how the following worked, but it was quite heavenly. Was at a restaurant who dropped the bill on my table after dining. It had a standard receipt on a black tray like you'd see anywhere in the US. But the receipt had a QR code along with a note about Apple Pay. I thought, "Hey I'd rather do Apple Pay than give them a CC so I scanned it.

I was prompted with one of those App Clip interfaces, double-clicked to approve the Apple Pay, and done.

It was such a nice experience, no nagging prompts forcing me to download some crappy App. Just a simple clean, Apple Pay checkout.

Note I agree with TFA about QR menus. But this level of phone integration was the perfect amount on top of a traditional dining experience.