Yeah, protecting the "template" is a pretty basic thing in biometrics. For example, here's a paper from 2005 about a scheme for secure storage of fingerprint t

Yeah, protecting the "template" is a pretty basic thing in biometrics. For example, here's a paper from 2005 about a scheme for secure storage of fingerprint templates. http://www.cse.lehigh.edu/prr/Biometrics/Archive/Papers/Tuyls05.pdf http://www.cse.lehigh.edu/prr/Biometrics/Archive/Papers/Tuyl... I don't know much about this scheme in particular; it was just the first search result for "biometric authentication template". But this shows how people have been working on this topic for a long time now.