It will logout on charger.Don't the Zebras automatically log out the previous user when they either power them off or put them on the charger?
I have seen my Zebra just log me out when I am still using it.
Not power off.
The problem is when you do a logout in any app except pickup, pickup doesn't know to turn off drive up notifications.
The mid day logoffs are usually because you don't login to something else with a few hours. Your login session is only valid for 2-4 hours after you login, but if you login to a new app 4 hours and 1 minute later you need to enter your pin again.