Security is so often not in your hands, especially while you are away from your desk. You cannot always protect your computer if your screen is unprotected. ActiveScreenLock gives you the opportunity to lock the screen so no one uses your computer without your permission.
    How this program works is that it locks the screen by adding a password-protected window placed on top of all the others. In order to remove it, you or the person using it has to enter a correct password. Even, key combinations Alt+F4, Ctrl+Alt+Del, Alt+Tab, and WinKey are also blocked. The program also keeps a log of all invalid access attempts and wrong passwords entered. It is very easy to activate the blocking window which can be done by clicking program's icon or automatically after computer has been idle for a set period of time. The program is also capable of hiding mouse cursor, disabling task manager, and it runs automatically if the computer is reset.
    If you need some fun in screen lock then there is an option to create a lock screen slideshow by simply indicating a folder that contains the desired images.