[mistercow]

Given the rate of false positives when "cold hits" are used with DNA databases, facial recognition (which is presumably higher entropy than DNA) has the potential to send a lot of innocent people to jail.

I also have some concerns of inadvertent "software racism". See for example, this video: https://www.youtube.com/watch?v=t4DT3tQqgRM. Obviously facial recognition isn't inherently incapable of recognizing people of different races, but if it's designed and calibrated on subjects of one race, it won't necessarily work well for subjects of different races. The last thing we want is a facial recognition database that thinks e.g. all Arabs look alike.

And of course, there are a ton of ways that it can be thwarted easily and inconspicuously, even if it works very well. Are all surveillance cameras going to be fitted with IR filters to ensure that a bright IR LED necklace doesn't blind them? And how hard is it for a criminal to hire a makeup artist?