How are finger prints identified ?



Did you ever notice the tiny ridges and lines on the tip of each finger? If you generally press one of your fingers onto an inkpad and then leave its impression on a piece of paper, that’s a fingerprint! Your fingerprints are a way to prove that you are who you say you are.
Our fingers have sweat glands that ooze some oils and salt through tiny pores on finger surface. This thick film of sweat and oil trapped in the ridges leaves behind a print when we touch anything. These fingerprints can be dusted, recorded, digitally analysed, and compared to all other fingerprints that have ever been stored.
Fingerprints have been an integral part of the law enforcement process that could help the police officers catch criminals. Fingerprint identification is based on pattern recognition where the arches, loops and whorls of the fingerprint ridges are compared with stored data.

Identification is performed in
1. A picture of the fingerprint is taken either optically or electronically, or as a combination of these two methods.
2. It is transformed into a numerical model, which stores the fingerprint’s unique characteristics.
3. A recognised numerical model is compared with a stored numerical model to find similarities.

Did you know ?

1.There is a one in 64 billion chance that your fingerprint will match up exactly with someone else.
2.It is difficult to get fingerprints on carpets
and clothes as they
absorb the oils.
3.No two people have been found to have the same fingerprints till date—including identical twins.