Apropos of nothing in particular, I was involved in installing the database of 'interesting' car registrations and people's photos at ferry ports in the UK back in the 1980s. It as the first UK government installation of photographic recognition. Binary field in an Informix database for any geeks who may be interested. It was installed because even during the troubles it was deemed too difficult to perform manual checks and with this system they could pull just those 'of interest'. Full of flaws of course but an interesting exercise that led the way for today's more sophisticated recognition systems.

DtG