I use Apple Pay at nearly every store I shop at regularly, and was skeptical that Face ID was going to be as smooth as the fingerprint sensor.
In practice, though, I think I actually prefer it--since the double-button-click to trigger pre-authentication is quick and definite, and you've then got 60 seconds to actually get to the reader, it feels more definite that I'm ready to pay when my turn is coming up (and easier to test if an unmarked reader supports Apple Pay--pre authenticate, wave the phone near it, if it doesn't beep instantly no go). I'm sure there was a way to pre-authenticate with a fingerprint before, but the process never seemed obvious to me, and I didn't like the hiccup on the occasions (admittedly much rarer after the post-6 Touch ID improvements) that it didn't read my fingerprint on the first try.
If nothing else, Face ID definitely works better than the first-generation iPhone 6 Touch ID did--my wife wouldn't even use her 6 to pay, since Touch ID would only register her fingerprint maybe one out of every three tries, no matter what she did. In my experience if I take the time to actually point the phone at my face directly Face ID never fails. It's still maybe 70-80% accurate from off angles.
In practice, though, I think I actually prefer it--since the double-button-click to trigger pre-authentication is quick and definite, and you've then got 60 seconds to actually get to the reader, it feels more definite that I'm ready to pay when my turn is coming up (and easier to test if an unmarked reader supports Apple Pay--pre authenticate, wave the phone near it, if it doesn't beep instantly no go). I'm sure there was a way to pre-authenticate with a fingerprint before, but the process never seemed obvious to me, and I didn't like the hiccup on the occasions (admittedly much rarer after the post-6 Touch ID improvements) that it didn't read my fingerprint on the first try.
If nothing else, Face ID definitely works better than the first-generation iPhone 6 Touch ID did--my wife wouldn't even use her 6 to pay, since Touch ID would only register her fingerprint maybe one out of every three tries, no matter what she did. In my experience if I take the time to actually point the phone at my face directly Face ID never fails. It's still maybe 70-80% accurate from off angles.