KeyFreeze is a freeware to lock keyboard and mouse. However, unlike other similar software, it just locks keyboard, and mouse, but leaves display as it is. So, if you are watching a movie, and do not want anyone to touch keyboard or mouse, you can just lock them, and keep watching movie as it is.
KeyFreeze is perfect if you have small kids in your house. You might be watching something on your computer, and your kid might be banging his /her hands on your computer. In that case, you can just lock keyboard and mouse using KeyFreeze, and keep watching your movie.
To lock keyboard and mouse, just start KeyFreeze. It will give you a few seconds warning, and will then lock your keyboard and mouse. To unlock, just press Ctrl + Alt + Del, and then Esc key. Another similar software we reviewed earlier is WinLock.
KeyFreeze is completely free. Download KeyFreeze.