Yes. fingerprint = one word
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A fingerprint reader
Galton
You cannot determine someone's IQ from a fingerprint.
Well Fingerprints help solve mysteries and crimes and such is because a fingerprint is unique because your the only one who has that pattern such as cuts,curves,and swirls.So lets say someone did a crime and they don't know who that person is they find a fingerprint take it and study on it to see who has that fingerprint.Try and test if you or your friends have the same fingerprint if so then those people who has that same fingerprint is the same person.
There are three main fingerprint patterns: arch, loop, and whorl. However, there is variation in these patterns in each person. You may inherit a basic pattern from one of your parents, but no two people have identical prints.