Windows Hello is a new feature in Windows 10 that enables a user to log in to their Windows 10 device using a biometric factor (face, fingerprint, or iris). Windows Hello requires special sensors for face and iris detection, only available on new Windows 10 devices.
The True Key app is a cross platform (Windows 7/8/10, Android, iOS, Mac OS) multi-factor application that removes the hassle of having to remember, create or manage passwords for your apps, websites and across all your devices. And it can be unlocked using factors that are unique to you, such as Face, Fingerprint, or Trusted Devices you own.
The facial recognition works with the 2D cameras available on most devices, and is even more secure when used with an Intel RealSense camera.