KeyLemon - Lock and Unlock Your Computer Using Your Face.

A software LemonScreen automatically locks your computer when you move away and unlock it when you are back simply with your smile and face, faster than you will type your password.

Thanks to face recognition technology LemonScreen ensures computer access to authorized users only. One of the coolest features Hijackers tracking. With the hijackers tracking feature you can view pictures of the person who was in front of your computer before automatic lock and who typed a wrong password when computer was locked. Wow, can you imagine you come back to your desk and see the picture of the person who was trying to access your computer with out your permission and the person who played latest prank on you by sending email from your computer to your boss that you are quitting.

In order for this app to work you will need webcam builtin or installed.

This app is only for PC users but company will be lunching for Mac users soon. If you would like to first one to know use can sing up here.

The price is $19.95