Luxand Blink!

London Flank! A free application for Windows that allows you to set your face as a passwd to launch windows in Windows.

What? Yes, it uses webcam m and face recognition to capture your face and save it as your password. Once this is done, when you start Windows, you have to keep yourself in front of webcam and locked block ink! Your face and start session will recognize.

Moreover, if you do not stay in a house, someone will save a picture in his mouth so that you can know who has tried to access your computer.

An original and effective way to protect your computer. Oh, yes, and if you remember the password, your face is password