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Your fingertips are covered with tiny ridges that are caused by patterns in the deeper layers of skin. These ridges probably give a better grip when you pick things up.
As long ago as 1823 it was realized that each person's fingerprint is unique, and fingerprints are now widely used for identification of criminals and sometimes as personal identification.
Many hospitals take a footprint from newborn babies, because feet carry similar identifying patterns. This is a good form of identifica
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Tags: fingerprints,
identification
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