@mlanger FWIW, I have heard Apple representatives say that Face ID has way more entropy than their fingerprint scanners and hence is more secure. (This does not necessarily apply to recent versions of Android which do face recognition with their selfie cameras instead of 3D scanning.) I'm not aware of peer-reviewed research on this, so I'd take it with a grain of salt; its just what a member of the team that did the development of the hardware told me at a conference.