I just got a Samsung Galaxy S9 with Android 10. In my current configuration, I have observed this rough state machine as it starts up.
Settings > Lock screen > Contact information is a great feature. However, I see no way to ever see that message in any of the grey states without the password. Is it possible to configure Android so that the contact information is accessible from any state, or at least from powered-off or out-of-battery, without disabling all security features?