Doesn't matter. One fingerprint does not correlate with one valid image anyway, and not with two either. I don't know what the correlation is, but I would bet on thousands of valid images per fingerprint. The problem is that a fingerprint isn't even presumed to be unique for every living human (Wikipedia has three examples of false positives, from Europe and the US from 1997 to date, that is clearly a limited population, time and fingerprint database). And while the fingerprint has molecular resolution, an image of one hasn't - so uniqueness definitely drops quit a bit. So instead of one in 100 million, you may very well drop to one in 100 thousand. The pigeon hole principle certainly applies.
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