But people have similar faces called eigen faces in Mathematics. This is not Secure because faces are not unique. Similar to finding a similar to you looking fa

But people have similar faces called eigen faces in Mathematics. This is not Secure because faces are not unique. Similar to finding a similar to you looking face on the street/internet. Humans have an average faces and then diverge from that. Eigenface https://en.m.wikipedia.org/wiki/Eigenface https://en.m.wikipedia.org/wiki/Eigenface