If you look into how they are setup it makes more sense. Imagine if fingerprint database was publicly searcheable online. So you’re a detective, and it’s a slow day. Start comparing fingerprints lifted from a crime scene at one of the sites. If you find a match, bully for you. What’s cool is police departments that save evidence carefully over the years can solve all kinds of crimes now. So stuff they didn’t necessarily realize would be useful, it was a good thing they saved it anyway. There’s probably quite a few bad guys out there sweating these days.
Finger print evidence was not needed but presented. The FP expert was noting six points for a match.
My brain was questioning why there was not a exact match for the whole print, and this was not questioned in court.
I note that most all examples of finger print matches are for so many (usually 6-8) points but never a exact match.