To prevent the screen (about 3 clicks deep) from timing out while she did deeeep research in a massive printed tome of specific medical & lab products coming through customs. There were software options, hardware, etc but we didn't think of THIS....
https://old.reddit.com/r/DiWHY/comments/1tna5gg/to_prevent_the_screen_from_locking/
That is really making the rounds. I *almost* posted it just now before reading the new posts
Brilliant. You might need something to tap the keyboard though. Although there must be something that is effectively the opposite of a key logger. Like a USB key that plays back all the keystrokes from a previous day of work.