MRT Lock is a security application designed for Windows users who want to protect their computers from unauthorized access. This program, developed by Maher Tannous, falls under the category of Security & Privacy, specifically as an Ad Blocker.

With MRT Lock, users can easily set up a unique key combination to lock and unlock their computers whenever needed. By default, the combination is CTRL-ALT-L, but it can be customized according to user preference.

This straightforward tool ensures that your computer remains inaccessible to others when you step away. Simply click the 'Lock' button, and your computer is instantly secured, preventing unauthorized access until you return or input the designated key combination.