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How many possible combinations are there for fingerprints?

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Any calculation of probability that 2 prints could match and not be from the same person is usually made with gross simplifications, but there are an astronomical number of combinations. Here's a super generic calculation: Assume the ridge bearing skin on a single fingertip is 2.5cm x 2.5cm. read more

There are several. The chance of two people having the same fingerprint is 1 in 25,000,000,000,000. There are combinations based on gene codes and are set DNA. read more

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