Fingerprinting
Fingerprints have been used as a means of identification dating back well over two thousand years. Over the past century, the fingerprinting process has become more sophisticated, and it has been put to many more uses. Fingerprints are the little ridges on the end of your fingers and thumb. They are arranged in a pattern of spirals and loops. Nature evolved these to help us grip and hold on to things. The texture prevents things from slipping and sliding as would naturally happen if our skin were smooth, and especially if our hands are wet or sweaty.
Finger prints are made by oil and sweat on the surdave of the skin and are almost invisible,Other visible human characteristics tend to change; fingerprints do not. Barring injuries or surgery causing deep scarring, or diseases such as leprosy damaging the formative layers of friction ridge skin (injuries, scarring and diseases tend to exhibit telltale indicators of unnatural change), finger and palm print features have never been shown to move about or change their unit relationship throughout the life or a person.
Fingerprints are taken when an individual is arrested, whether or not they are eventually convicted or are innocent. In some cases, the record of an innocent party can be purged, but usually these remain in the system and make their way from the local police department to the national FBI system.
Finger prints are made by oil and sweat on the surdave of the skin and are almost invisible,Other visible human characteristics tend to change; fingerprints do not. Barring injuries or surgery causing deep scarring, or diseases such as leprosy damaging the formative layers of friction ridge skin (injuries, scarring and diseases tend to exhibit telltale indicators of unnatural change), finger and palm print features have never been shown to move about or change their unit relationship throughout the life or a person.
Fingerprints are taken when an individual is arrested, whether or not they are eventually convicted or are innocent. In some cases, the record of an innocent party can be purged, but usually these remain in the system and make their way from the local police department to the national FBI system.
Difernt types
Exemplar prints
Exemplar prints, or known prints, is the name given to fingerprints deliberately collected from a subject, whether for purposes of enrollment in a system or when under arrest for a suspected criminal offense.
Patent prints
Patent prints are chance friction ridge impressions which are obvious to the human eye and which have been caused by the transfer of foreign material from a finger onto a surface.
Plastic prints
A plastic print is a friction ridge impression left in a material that retains the shape of the ridge detail.
Classifying fingerprints
Before computerisation replaced manual filing systems in large fingerprint operations, manual fingerprint classification systems were used to categorize fingerprints based on general ridge formations such as the presence or absence of circular patterns on various fingers.
Exemplar prints, or known prints, is the name given to fingerprints deliberately collected from a subject, whether for purposes of enrollment in a system or when under arrest for a suspected criminal offense.
Patent prints
Patent prints are chance friction ridge impressions which are obvious to the human eye and which have been caused by the transfer of foreign material from a finger onto a surface.
Plastic prints
A plastic print is a friction ridge impression left in a material that retains the shape of the ridge detail.
Classifying fingerprints
Before computerisation replaced manual filing systems in large fingerprint operations, manual fingerprint classification systems were used to categorize fingerprints based on general ridge formations such as the presence or absence of circular patterns on various fingers.
Before computerisation replaced manual filing systems in large fingerprint operations, manual fingerprint classification systems were used to categorize fingerprints based on general ridge formations (such as the presence or absence of circular patterns on various fingers), thus permitting filing and retrieval of paper records in large collections based on friction ridge patterns alone.