Microsoft Using Biometric Authentication for new Windows 10 OS

From Microsoft's blog on their new OS Windows 10 - which you should download if you haven't already - Its free if you already have windows 8. They are incorporating biometric authentication into the software.

"When we started building Windows 10, the team spent a lot of time and energy thinking about how to make computing more personal. We want your devices to recognize you, to understand what you’re saying… we want the experience to go wherever you do and we want you to feel a great sense of TRUST as you go. We talked a bunch about these ideas on January 21, and today we’ve got another cool new “personal computing” feature to announce for Windows 10.
I’d like to introduce you to Windows Hello – biometric authentication which can provide instant access to your Windows 10 devices.*  With Windows Hello, you’ll be able to just show your face, or touch your finger, to new devices running Windows 10 and be immediately recognized.  And not only is Windows Hello more convenient than typing a password—it’s more secure!  Our system enables you to authenticate applications, enterprise content, and even certain online experiences without a password being stored on your device or in a network server at all.
So how does it all work?
Windows Hello introduces system support for biometric authentication – using your face, iris, or fingerprint to unlock your devices – with technology that is much safer than traditional passwords. You– uniquely you– plus your device are the keys to your Windows experience, apps, data and even websites and services – not a random assortment of letters and numbers that are easily forgotten, hacked, or written down and pinned to a bulletin board. Modern sensors recognize your unique personal characteristics to sign-you-in on a supporting Windows 10 device.
Which devices, you ask?  Well, there will be plenty of exciting new Windows 10 devices to choose from which will support Windows Hello.   And, if your devicealready has a fingerprint reader, you’ll be able to use Windows Hello to unlock that device. For facial or iris detection, Windows Hello uses a combination of special hardware and software to accurately verify it is you – not a picture of you or someone trying to impersonate you. The cameras use infrared technology to identify your face or iris and can recognize you in a variety of lighting conditions.
Of course, convenience and simplicity should never sacrifice security and privacy. Windows Hello offers enterprise-grade security that will meet the requirements of organizations with some of the strictest requirements and regulations. It’s a solution that government, defense, financial, health care and other related organizations will use to enhance their overall security, with a simple experience designed to delight.