What is Dactylography

Dactylography

The scientific study of fingerprints, known as dactylography, is used as a technique of crime detection by practically every modern law enforcement agency. Other government agencies and many private businesses also use fingerprints for identification purposes. The largest collection of finger prints is held by the Federal Bureau of Investigation (FBI) in America.

The fingerprints of the two persons are not exactly same and not even those of identical twins.The fingerprint is the pattern on the inside of the finger in the area between the tip and the first joint and stays the same from the day of a person's birth to the day they die.

 For tracking down a criminal, more than 100 years of fingerprint record-keeping, no two identical sets have ever been found, even on identical twins.

Finger prints are easily classified, as there are four different basic shapes of pattern — arches, loops, whorls, and composites — that are then subdivided according to things like the numbers of ridges between certain points in the pattern