Found these:

https://software.intel.com/en-us/realsense/devkit

"Facial scan. This sign-in requires special camera hardware with IR capabilities—so it can work in any lighting, including pitch...

Prior to the update to WIN 10, face sign-in worked great to log me in to the computer.

Updated to WIN 10 yesterday; lost ability to sign in by having the computer scan my face.

If I go to...