System Locker is a handy utility that allows you to protect your personal computer from unauthorized access by locking keyboard and mouse. You can use System Locker to restrict access to your PC. It is attractive, secure, and very easy to use. It starts automatically with Windows and optionally locks your desktop upon loading. It hides your desktop on system lock and provides an informative message to other users. You can set start/stop times for users to limit their access to your PC. Any action performed by System Locker is optionally recorded to log file and accompanimented with sound.
Main features of System Locker: secure mouse and keyboard input blocking, powerful startup and automation options, audit and scheduling features, resistance to brute-force password hacking, sound support, taskbar icon notification.
This software is a shareware. You will be able to download and test Active System Locker during a certain period of time, then, if it does what you need, you will have to acquire the full version from Active System Locker publisher. The Active System Locker 3.2 free trial version contains an installer and an uninstaller, and has a size of 725 Kilobytes.
For additional information and support request, please contact directly Active System Locker publisher.

Active System Locker Screenshot