Ahem.
When they say every fingerprint is different, are they right? There couldn't be an infinite number of finger print patterns, could there be? If, so how?
It depends how close to each other they have to be to count as the same. They consist of a series of mostly parallel lines, but for the sake of simplicity only focus on just one. It's a curve. A curve has an infinite collection of other curves that are different to any, arbitrarily small degree, and that's even true for smooth curves like we're talking about here, and even if you ignore a finite set of transformations, like moving it or stretching it.
However, the systems that police use to catalogue them have no such infinite precision. If you have a collection of k fingerprints, and there's n possible fingerprints a system could distinguish, the probability of two overlapping is a lot higher than k/n, actually, even if you charitably assume every fingerprint is equally likely. In criminal cases, a little bit of doubt is enough to prevent conviction in a typical Western country. The issue of whether a fingerprint - especially a partial one - is reliable enough evidence a given person was involved has indeed come up before. Off the top of my head, I don't know if it's made the difference in any cases, but I bet it has.
IIRC, it's a big issue because a lot of the systems are proprietary, and the companies don't want to provide defence lawyers with any sort of data on how they work. For all they know, it could be programmed to return a match with a random frequent offender if it can't find anything else. Unfortunately, most judges are tech laymen who see no issue with blindly trusting a magic box, and are very aware that some nasty people could be released if they call said boxes into question, so getting the problem recognised is or was an uphill battle.
Pretty much the same. Bought some Bitcoin in high school in the early 10's. It was just a novelty and I was a kid, so I didn't buy much, but if someone was kidnapped or something it would be worth it to go through my old drives.