Mouse Trap is a powerful security tool for Windows 95, 98, NT, 2000, and XP. It traps your mouse in place until you enter your password, while disabling system keys like Alt-Tab and Ctrl-Alt-Del to prevent tampering. It can hide itself in the system tray until you need to use it; it can also be configured to trap the mouse on system startup or at a certain time of day. New for version 4.0: can be set to release the mouse at a certain time of the day, can automatically trap after your computer has been idle for X amount of minutes, settings and exit can be password protected, Privacy Screen (Blacks out the rest of the screen when trapped), and much more!
