For users who are too lazy to type in a password and rather use facial scanning, don't. A study at The University of North Carolina was able to render a 3D image that can fool the security system by finding just a name and three pictures attached to that name. On the five systems UNC tested, only one passed.

Source: https://techxplore.com/news/2016-08-vr-software-facial.html

Image Source: By Hartmann Tresore France (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons