At one company we talked about doing the ultimate version of that prank (which ultimately would make it easier to discover)… 1. Unplug the mouse, 2. Cover the

At one company we talked about doing the ultimate version of that prank (which ultimately would make it easier to discover)… 1. Unplug the mouse, 2. Cover the mouse sensor with tape, 3. Replace the desktop with a screenshot, 4. Flip the screen 180 degrees, 5. Print out the screen, and tack it in front of the monitor…