Finger Prints is a book published by Francis Galton through Macmillan in 1892.
It was one of the first books to provide a scientific footing for matching fingerprints and for later acceptance in courts.
He collected information from a number of people and recorded their backgrounds, financial situations, likes and dislikes, health, etc.
He collected fingerprints of a large number of people and invented a method of their classification.
Using statistical methods he showed that the possibility of fingerprints of two different people being identical is nearly zero.