Today at a developer session in Build, we got to see a demo of Windows Hello. It's a biometric authentication which can provide instant access to your Windows 10 devices. Windows 10 supports three types of biometric authentication: fingerprint, face, and iris. We recorded the demo of unlocking a computer and making an app purchase by placing your face in front of the camera. Watch the demo on video.
Microsoft is working closely with hardware partners to deliver Windows Hello capable devices that will ship with Windows 10. OEM systems with Intel RealSense 3D Camera (F200) will support facial authentication. Windows Hello will also support all current fingerprint-capable devices. More details on sensor requirements and support for iris authentication are coming soon, but expect a selection of supported devices within the next 12 months.
Windows Hello is optional, so you decide whether you want to use it on your machine or not. Are you going to use it? Let us know in the comments!