Windows Hello ? What's the difference between an iris scanner and 3D facial recognition?

[Windows Central]

After posting our report earlier on Microsoft's October plans a bit of confusion cropped up in comments. Why would I worry that a Windows Hello camera cannot fit into a 12-inch Surface, but it can in a phone?

The answer is simple but requires a bit of explanation. The shorter answer is there are two different technologies for Windows Hello (three, when you add in fingerprints).

Full story from the WindowsCentral blog...