Biometrics are a convenient PIN replacement only. They are not a secret. They are not revokable. Once public the whole world has access to them. And oftentimes

Biometrics are a convenient PIN replacement only. They are not a secret. They are not revokable. Once public the whole world has access to them. And oftentimes it is so easy to extract the biometric in question like the photo of the fingerprint of the German defense minister by the Computer Chaos Club. https://www.dw.com/en/german-defense-minister-von-der-leyens-fingerprint-copied-by-chaos-computer-club/a-18154832 https://www.dw.com/en/german-defense-minister-von-der-leyens...