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  Marcello Malphighi discovered the pattern of fingerprints
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  John Evangelist published a paper about 9 different kinds of fingerprints but didn't mention how they could identify people.
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  Dr. Henry Faulds discovered a way to identify a person with their fingerprint.
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  A police officer named Juan Vucetich was the first ever to use thumbprint technology. He used it in a case to find a murderer.
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  The U.S Navy used fingerprint identification to know who they are. 25 years later the Army started to use it.
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  Thumbprint technology today is used to identify users of cellular devices. For example Apple and Samsung are using Thumbprint technology security for their phones.