My anecdata is from this past weekend when I had a choice of ordering from two different pizza apps. I went with the one that offers Apple Pay because the checkout process is so frictionless.

When it comes to buying things online, for me I prefer Apple Pay > Stored credit card number (Amazon) > Punching in a credit card number > PayPal. For me, this is 90% about trust.

Again, just one data point, but it's the only one I have.

on term of UX i would go Paypal > Punching in a credit card number.

Punching a cc is the worst horror UX ever in the history of life

I'll personally support this claim, on my iPhone Apple Pay is so seamless (finger over home button and done) that I'll consciously want to purchase it more.

Similar story for one-click solutions such as paypal and amazon. If I don't have to get my card out then I'm far more likely to make a purchase.

> Finger over home button One of the best use cases for touch id. Apple pay with FaceID is so much more of a pain in the rear. I have to double click the power button, position the phone so it can see my face, then put it back over the reader. Not at all seamless.

I also highly doubt that the Apple Pay button shows up on places where it isn't supported.

The Apple Pay button is a browser feature and unless you mimic it using CSS, it will only show up if you're in a supported region with a supported device that has apple pay enabled and cards added.