Long after HP Elite X3 had been announced with Fingerprint reader, Microsoft has now made Fingerprint sensor support official on Windows 10 Mobile in its upcoming WinHEC event presentation. So, while nobody even expressed surprise when HP Elite X3 was revealed coming with one, it has become one hot news topic now. Anyways as you can see in the above slide taken from official presentation.
It is debatable though which one is cooler Iris scanner of Fingerprint sensor with our vote going to Iris scanner because it is fast, more secure and sounds cooler than the fingerprint sensor. You can check Iris scanner in action on a Lumia 950 XL in our hands-on video.