A while back, we had a series of temporary root passwords for a UNIX box that was in the process of being phased out. Since there were multiple “admins” of this box, we wrote down the root passwords on sticky notes and taped them to the monitor. But to ensure security, we only used passwords that were different words when inverted. Example: h4s74h5L. Inverted, it reads 7S4hL5h4, which is what we wrote on the post-it. No one would have a clue that you need to turn the post-it upside down, except the admins. It was a neat offline way to pass admin authority on a temporary box without giving everyone in the office the ability to screw with stuff.