The Predator software uses a USB drive as a key to lock or unlock your computer by removing it or plugging it in. The software is free to download here:
http://www.predator-usb.com/predator/en/index.php
How it works?
- when you're away from your PC, you simply remove the USB drive:
once it is removed, the keyboard and mouse are disabled and the screen darkens
- when you return back to your PC, you put the USB flash drive in place: keyboard and mouse are immediately released, and the display is restored.
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