This is very cool. Back in college, we had keyboards that were overused and of not very high quality. The wear and tear of several students pounding on them mad

This is very cool. Back in college, we had keyboards that were overused and of not very high quality. The wear and tear of several students pounding on them made the sounds of many keys distinguishable. The administrators had a simple password for root. It had two spaces and two number keys in it. Totally 7 letters long. I made some educated guesses by listening to the sounds while they typed it in and then used those to narrow down my brute forcing program (a C program I might add). That got me in in a few hours.