Similar to this question: Can I bring the lock screen back after dismissing it? ('go back a screen' from password entry)
How do I go back to the Lock Screen once I've gone to the password screen in Microsoft Surface tablet?
This is a different mechanism from using the referenced question in that no physical keyboard is available.
Alternately, can the timeout on the password screen be shortened?
At this point I would like to change the timeout of the password screen. Can this be done, either through GUI or registry (or other) means?