I used to work in biometrics. In the first few minutes of a biometrics class in about 2004 the instructor quoted numerous people, going back about 30 years, each saying biometrics would be reliable “in ten years”. When I actually looked at the data for various biometric systems I was rather shocked by the failure rates. And those were in cases where there was no deliberate attempt to defeat the system. I attended a conference on biometrics and I invented a new biometric system (no, I can’t talk about it—a certain government agency says that information is restricted). It became quite clear to me that every biometric system in existence could be defeated if you knew it was being used. And furthermore it was unlikely that any system could ever be undefeatable.
Hence, I am not surprised experts are coming to the same conclusion I did several years ago:
Biometric systems — designed to automatically recognize individuals based on biological and behavioral traits such as fingerprints, palm prints, or voice or face recognition — are “inherently fallible,” says a new report by the National Research Council, and no single trait has been identified that is stable and distinctive across all groups.