I have a general aversion to giving anyone enduring access to my accounts, but I don't have a problem giving people I trust temporary access.
Regarding safety, I don't think it's unsafe but would be happy to have my mind changed if you have more experience with the relative risks of driver distraction: my hand is on the wheel with a finger held out and she positions the touch id button under the finger, so I've still got both hands on the wheel & have full control in the event I need to steer out of the way of a hazard. I'd only do it on a straight stretch of road with no obvious hazards (and on top of that it's rare that it's needed, usually just if we need a contact number that was sent only to me).
I'd definitely not use FaceID while driving because I'd be uncomfortable taking my attention away from the road to look at a phone screen (even if it's just a glance just like checking the speedometer)
Regarding safety, I don't think it's unsafe but would be happy to have my mind changed if you have more experience with the relative risks of driver distraction: my hand is on the wheel with a finger held out and she positions the touch id button under the finger, so I've still got both hands on the wheel & have full control in the event I need to steer out of the way of a hazard. I'd only do it on a straight stretch of road with no obvious hazards (and on top of that it's rare that it's needed, usually just if we need a contact number that was sent only to me).
I'd definitely not use FaceID while driving because I'd be uncomfortable taking my attention away from the road to look at a phone screen (even if it's just a glance just like checking the speedometer)