I think the scientific consensus is that they are NOT unique. I seem to recall there’s something like a one in five million chance of collision. (Recalling from memory so please verify, I recall thinking that in a large city there’s likely to be another person who’s fingerprints could be mistaken for yours)
IIRC, someone was accused and arrested for murder who lived across the country and couldn't have possibly committed the crime based on fingerprint match.
