Skip to main content

FINGERPRINT BASICS

Fingerprints are one of those bizarre twists of nature. Human beings happen to have built-in, easily accessible identity cards. You have a unique design, which represents you alone, literally at your fingertips. How did this happen?

People have tiny ridges of skin on their fingers because this particular adaptation was extremely advantageous to the ancestors of the human species. The pattern of ridges and "valleys" on fingers make it easier for the hands to grip things, in the same way a rubber tread pattern helps a tire grip the road.


The other function of fingerprints is a total coincidence. Like everything in the human body, these ridges form through a combination of genetic and environmental factors. The genetic code in DNA gives general orders on the way skin should form in a developing fetus, but the specific way it forms is a result of random events. The exact position of the fetus in the womb at a particular moment and the exact composition and density of surrounding amniotic fluid decides how every individual ridge will form.

So, in addition to the countless things that go into deciding your genetic make-up in the first place, there are innumerable environmental factors influencing the formation of the fingers. Just like the weather conditions that form clouds or the coastline of a beach, the entire development process is so chaotic that, in the entire course of human history, there is virtually no chance of the same exact pattern forming twice.

Consequently, fingerprints are a unique marker for a person, even an identical twin. And while two prints may look basically the same at a glance, a trained investigator or an advanced piece of software can pick out clear, defined differences.

This is the basic idea of fingerprint analysis, in both crime investigation and security. A fingerprint scanner's job is to take the place of a human analyst by collecting a print sample and comparing it to other samples on record. In the next few sections, we'll find out how scanners do this.

Popular posts from this blog

IT EMPLOYEE HEALTH ISSUES

An increasing number of IT professionals have been finding it difficult to handle emotional stress, according to experts. An ‘occupational hazard,' the stress related to work needs to be addressed without delay, they emphasise.

“Coping with stress and striving for mental health welfare should be a matter of concern for all and not treated simply as a lifestyle problem of the ‘IT phenomenon',” says Nithya Chandrasekaran, a consultant physician for many IT companies in the city. Post-recession, employees feel pressured to perform well.

Regular occupational problems such as wrist problems due to constant handling of the mouse, slip disc and eye fatigue are common now, but handling stress that arises owing to fear of losing job or to cope with the increasing competition, affects the employee's performance, eventually, taking a major toll on his health, doctors explain.

The project that K. Balajee (29) was handling was pulled off after six months of its inception. Currently ma…

Internet Safety Tips and Rules

Why is it important to stay safe online?

Most of us are ‘connected’ via our laptops, mobile phones, tablets or personal computer. The potential for the internet to be a valuable and a fun resource for entertainment, making friends, keeping in touch and learning is huge. But if you use the internet, you could be at risk of illegal activity or abuse - be it bullying, fraud or something more serious. Unlike seeing someone face to face, on the net, people aren't always what they first seem.

In the same way you learn about safety when you leave the house, it is important to learn how to stay safe online. These are skills that will stay with you for life.



Internet Safety Tips for Kids and Teens
1. Spend time having fun with your parents online and helping them understand technology!
2. Never post your personal information, such as a cell phone number, home number, home address, or your location on any social networking site or through mobile apps like Snapchat or Instagram.
3. Never me…

Cyber Crime

Cyber Crime is a fast-growing area of crime.More and more criminals are exploiting the speed, convenience and anonymity of the Internet to commit a diverse range of criminal activities that know no borders, either physical or virtual, cause serious harm and pose very real threats to victims worldwide.

What is the Cyber Crime? Cyber crime encompasses any criminal act dealing with computers and networks (called hacking).  Additionally, cyber crime also includes traditional crimes conducted through the Internet.  For example; hate crimes, telemarketing and Internet fraud, identity theft, and credit card account thefts are considered to be cyber crimes when the illegal activities are committed through the use of a computer and the Internet.

Identity theft
Identity theft and fraud is one of the most common types of cyber crime. The term Identity Theft is used, when a person purports to be some other person, with a view to creating a fraud for financial gains. When this is done online on the…