Originally Posted by turtle
The flaw to that is the time you step away from your system for any reason and someone else gets physical access to it. One time authentication for the entire session is a horrible idea. I can see a 15 minute window though. I would set mine to be immediate, but for people in cases like you can I understand why you wouldn't want to log in that frequently.
Well, yeah, I'm not really talking about "permanent login". However, when I sit down to my system and login, I shouldn't then also have to immediately login to System Preferences, then iTunes, then the App Store, then the iBooks Store, etc. Seriously, that is the way it currently works. Every single one of these apps requires a separate login. I've just logged in with my admin password, and my Apple ID. Within 30 seconds, I shouldn't have to type these in again, or even use my fingerprint. Same thing on iPhone. Once in 30 seconds is enough for crying out loud! Face ID to log in, then 30 seconds later Face ID to purchase an App, then 30 seconds later to purchase a song, then …
It's a broken system that isn't very well thought out. I think Apple is thinking to post-apocolyptic, here.