ClearLock-Put a transparent lock to your computer
ClearLock provides a convenient way to lock your desktop with a transparent layer, allowing you to see what's happening on your desktop and at the same time prevent access to the computer without the proper password.
ClearLock comes as standalone executable, just run it, set your password and click the ClearLock icon whenever you want to lock your screen.
There is no need to install the software. Just download ClearLock and save it in your desktop (or have a shortcut in desktop). To lock your computer double click the downloaded file. To unlock type the password in the ClearLock window.
ClearLock is designed to prevent others (e.g. your kids) from casually messing with your desktop, while keeping your desktop visible at the same time.
If you want to reset your password just delete the .ini file that was created in the same folder. The main advantage of using this application is that, you can lock your computer and on the same time you can see whats happening in your desktop, unlike (windows+L) feature in windows. Above all it's a freeware.