In addition to the problems you mentioned, biometric systems are basically designed to cause hash collisions. And probably to a higher degree than most people r

In addition to the problems you mentioned, biometric systems are basically designed to cause hash collisions. And probably to a higher degree than most people realize. After all, it would be annoying if FaceID failed just because I haven’t shaved today. So the algorithm has to account for that. As such, the entropy of the input is reduced.