> Finger prints require physical contact, facial recognition can be done at a distance and dragnet style I'm sure there are lots of existing (pesky) laws about

> Finger prints require physical contact, facial recognition can be done at a distance and dragnet style I'm sure there are lots of existing (pesky) laws about grabbing people and force-taking their fingerprint, or similar, while maybe not so many of those laws against taking a quick picture of a "suspects" face.