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A screen saver (w/ require password & possible full hibernation with memory flush)?

That's defeated by a USB mouse jiggler [1], which is apparently commonly used by the type of people who seize computers in the wild.

Yes, my idea was a intension counter measure to 'mouse' jigglers.

I think they are talking about a system that unconditionally asks for the password every 10 minutes even while the computer is in active use.