One of the most simple things you can do to tell what people are doing on your computer when you are not around is to install a "keylogger"
A keylogger does just what its name implies. It secretly logs everything that's typed on your keyboard into a text file, that you can then read later.
You can download several different freeware and shareware keyloggers from our AntiCode Archive.
Some companies also make "hardware keyloggers". These are simple devices that plug-in between your keyboard and your computer, and record everything onto a memory chip. One of the most popular of these devices is called KeyGhost.
