Well at least this is what you can tell to your friend after you caught him sneaking in your computer. If you feel that too many people are using your computer without your agreement, then you should install Advanced Invisible Keylogger. Very simple to use, this spy software can offer you all the informations you need to track the user. The application runs at lower level and captures every keystroke including username and windows log-on passwords. To be even more powerful, now Advanced Invisible Keylogger can capture also active window text, text which is typed in all popular instant messengers including AOL, YAHOO, ICQ, MSN and AIM. So keep out! You don't want to use a computer that has installed this application. As an administrator you can enable a startup alert which will tell the user that all his activity will monitored. For a better security, the application can even disable some of the most important features of Windows like: Task Manager, Startup Programs Overide. It can remove also shortcuts from the desktop, start menu and remove itself from the uninstall list.