[usaphp]

But the reason you unlock it is to look at the information on your phone, so it's not like you are using touch id without looking at your phone after that, no?

[grego]

I keep "loaning" my finger to family members all the time, when I'm driving, watching TV, and they want to borrow my phone. Not really sure Apple thought through this from every angle...

[MBCook]

They could just hold the phone up and you could look over for a fraction of a second. No different than if you were talking to them.

[cbhl]

Oh boy, that's going to be awful fun for parents. Let the kid play with a game; they call your name while pointing the forward camera at you and you've just Face ID'ed some in-app purchase.

[MBCook]

That's an interesting corner case. My phone has a setting that lets me turn off touch ID for App Store purchases (so I would have to use my passcode) so I guess you'd just have to use that if your kid kept tricking you and you couldn't stop them.

[adiabatty]

Then you get the bill in the mail a couple days later and then ground your kid.

[gberger]

In the mail? :-)