Fingerprint

Fingerprint

Fingerprints have been used to identify the suspect of crime for over 100 years. The sole purpose why forensic scientist relies on fingerprints is because of their uniqueness characteristic. For instance, the arrangement of the ridges and their distinctive shape make it easier for a forensic expert to make identification. Thus, the distinctive characteristics of fingerprints make it possible to match suspects fingerprint to a forensic record kept by a government department.

A person fingerprints are persistence over his lifetime.  Fingerprints do not change even in the case where a person skin is damaged. In the circumstances of damage another identical fingerprint grow back resembling the exactly birth arrange of his or her ridges, loops and other characteristics.  Thus, the process of fingerprint identification involves analysis, comparison, evaluation and verification of data from concerned parties.

In the analysis, a forensic expert first gathers intelligence to ascertain the amount of friction on ridges of the unknown mark. Moreover, the analysis also substrate the unknown mark as well as engage matrix in identifying any other substance that can relate to the suspects. These may vary from blood, oil sweat or any other quality identifiable with the suspect. After that, the expert must use one of the development medium to make the fingerprint in the unknown material visible for identification. However, there are circumstances where fingerprints are distorted. This is when unknown mark indicates movement when it was being deposited. This affects the analysis process because it distorts the ridges.

After development medium, fingerprint expert identifies the ridge flow and pattern in a detailed manner to establish the actual flow of the loops and ridges.