IMHO it all relates to what do you mean by "precisely identify" - if we're talking about automating some process that's currently done by humans, then it does n

IMHO it all relates to what do you mean by "precisely identify" - if we're talking about automating some process that's currently done by humans, then it does not to be able to distinguish identical twins, it only needs to be roughly comparable to what the humans can do. And the "benchmark human" is not a close relative using contextual clues, it's some bored overworked clerk who'd otherwise be looking at the same pictures.