Luxand Blink!

Logging in to your computer's user account has never been easier! Just take a moment to look at the webcam and you'll be logged into your account before you know it. Blink! uses advanced facial recognition technology to provide automatic, fast and reliable logins to one or more user accounts. Facial recognition algorithms are adapted to different lighting conditions, and changes such as hair color, beard, glasses, ...

Try this unique program, which is completely free!