Have you ever seen a movie in which a person in some secret government installation simply inserts and removes a card to log in and log out of a PC? If you thought that idea was cool, you’ll definitely want to investigate Predator. Once installed and configured, this little freeware utility will allow you to turn a USB flash drive into a key you can use to lock and unlock your computer.
With Predator, you can use a USB flash drive as a key to lock and unlock your computer.
While the USB flash drive is connected to your computer, everything works as it normally would. Once you remove the USB flash drive, your computer is locked down — the keyboard and mouse are disabled and the screen darkens. To unlock your computer, you just plug in the USB flash drive and the computer will be unlocked and you can begin using it.