I feel like it's just a matter of time before an AI will be able to at least take a guess at who a person is in every photo or painting ever. Facebook was already doing a "Is This You" feature a handful of years ago, and software has gotten a lot better. I wouldn't even be surprised that even if there wasn't a direct cross reference, that it could guess based on physical features and an understanding of how genetics work. Heck, as soon as I typed "physical features," the software could even take physical descriptions like "had a lazy eye" or even just "beard" and can narrow it down based on other features.

It's kind of cool... and a little creepy.