[evandavid]

I worked in Biometrics for a few years. I was on a fingerprint team, but I was part a wider team that was also responsible for forensic-quality facial recognition technology (a world leader). To put it bluntly, the technology is still very, very, very weak. When it works, it's really impressive, but that's normally during a demo from a nicely curated database. There are some facial technologies that can "work" from a distance (and they are used in airports already), but the success rate is low and the original image still needs to be of decent fidelity. Often times the results from the automated matching will be shortlisted for comparison by human operators. Maybe I was blinded by the awesomeness of fingerprint technology (still blows my mind thinking about it).

Combine this general lack of automated matching awesomeness with the fact that people age, can wear glasses or a beard, etc, and we are still many years away from this kind of capability.

Still, it's always fun to think about the possibilities that biometrics can and will provide.