What is fingerprint ?

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Fingerprints are the marks made by the ridges on the ends of the fingers and thumbs. These ridges form a pattern that stayes the same throughout a person's life. No two person have ever had the same fingerprints. So fingerprints are a foolproof way of identifying a person.

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Afingerprint record is made in an intersting manner. A small pieace of metal is coated with a thin film of ink. Next, a person's finger and thumb tips are pressed against the linked surface. Then the fingerprints are pressed on a white card. The prints are recorded in exact detail.

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Fingerprinting is often used to solve crimes. Fingerprints are pickd up at the scene of a crime. Million of fingerprints are kept on files by police departments.

Fingerprint is also used in finding missing person and identifying unknown dead, it is used to screen people who apply for certain jobs.

It is thought that the chinese used thumprints to sign documents a long time before christ. The system used today was invenred by sir Francis Galton in the 1880's. In1901 Sir E.R. Henry found a simple way of grouping fingerprints. His system is used by many law-enforcement organizations. 

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