It would be great if IT admins can specify which settings are locked with the USB key. For example, students in our school have found the brightness and contrast sliders in settings, and when both are turned all the way down it's pretty much a black screen. It's a lot of trial-and-error prodding to hit the right spot and get the sliders back up. It's such a massive waste of time when this is happening several times a day in multiple rooms across multiple sites.

An alternative to a tailored settings key would be to have one that locks out the entire settings app unless the key is present. I know this is what we would use here given the choice.

Cheers.