Fingerprints are something that never crosses peoples’ minds daily. Actually, unless somebody is trying to eliminate pesky fingerprints from mirrors or furniture, it is unlikely an ordinary person thinks of fingerprints in any way.
But for a few people, fingerprints are an essential portion of their job life. Law enforcement officers and forensic specialists spend hours thinking about fingerprints, trying to find, collect, document and compare those unique identifiers that could link a particular person to a particular offense. These people understand that a fundamental human feature is one of the most effective instruments in crime solution.
Each person is born with their particular set of fingerprints. No two fingerprints are alike; not on identical twins or even on a individual’s own hand. The formation of these unique whorls and lines that constitute an individual’s fingerprints happen at the fetal period and stay the same during one’s lifetime. This makes for a unique mark which can positively identify one person against another, particularly useful when a person of interest has an existing record of fingerprints on file with police, or other government institutions.
Fingerprints are made up of a set of swirling lines. How these lines shape and design themselves is what makes each fingerprint unique. Regardless of the incredible variety of unique fingerprints, there are only seven distinct kinds of lines which make up fingerprints. These lines can start, stop or split at any part of the print. The shapes, angles, and lengths create billions of unique prints.
Using their unique qualities, it becomes easy to see how fingerprints can help solve crimes. Leaving a fingerprint is like dropping a calling card at the crime scene. There are a few unique ways fingerprints get left behind by careless crooks. The most common way is by oil transfer from the finger onto an object such as a doorframe or table. Amino acids from the finger might also leave discernable marks. Detection of fingerprints can also be detected as an impressing on a soft substance. Finally, they are sometimes drawn up by substances on the finger such as paint or blood.
Uncovering fingerprints help solve a crime could be accomplished in a few ways. Adhering powders onto fresh fingerprints will get the powder to stick to the dirt and make the fingerprint visible. Another way is by utilizing a few drops of cyano-acrylate or superglue. Whenever these drops are heated up, they vaporized, and the smoke attaches to the fingerprint leaving a clear white print. Specialised crime scene laboratory equipment can also find fingerprints.
Fingerprints may be stored for more investigation in many of ways such as: capturing a photo of the printing, storing it on a tape or rubber lifter, maintaining the original ground the printing was on and copying it utilizing digital technologies.
Hopefully, the interconnected nature of our society will eventually lead to having all of the fingerprint databases connected for easy cross-reference.