> > :-)) How can you do _anonymous_ biometrics?
> >
> > Horst
>
> Easy. You see two fingerprints. The app tells you they're different but it
> doesn't tell you who they're from. But that would be good enough to
> distinguish which record belongs to which fingerprint.
>
> So the Drug-dependent can register his fingerprint, but no names,
> addresses, etc. And you should still be able to (theoretically) track the
> visits into the needle center...
Now I put on the hat of nice constable Jack, grab this little cute fingerprint
database and run it against my own cute fingerprint database. Voila. Most druggies are
likely to have had contact with the law, and fingerprints as well as other biometric
data is already stored. They know, I know, constable Jack knows, - did you know?
As you only store a limited number of features of every finger print,and they do not
need to stand in context as in the case of human language, even a strong hash can't
give you decent security. And even if it would, who would trust it?
Horst
