Benefits of Fingerprints in Solving Crimes
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.
However, for some people, its an important part of their jobs. Law enforcement officers and forensic experts spend hours thinking about how fingerprints solve crimes as they try to find, collect, document and compare those special identifiers that can link someone to a particular crime. These people understand that a simple human characteristic which most people for granted, can be among the very best instrument in crime solving.
Each person is born with unique fingerprints. No two fingerprints are alike; not on identical twins or even on a individual’s own hand. The unique whorls and lines which compose an individual’s fingerprints are formed at the fetal period and remain the same during one ‘s whole lifespan. This creates a unique mark which can single out an individual linked to a particular crime, especially when a person already has their fingerprints in the records of the police or other government institutions.
Fingerprints are made up of a set of swirling lines. How these lines shape and design themselves is exactly what makes every fingerprint unique. Despite the huge number of distinct fingerprints, there are only seven unique kinds of lines that make up fingerprints. These lines can begin, stop or divide at any location within the print. The shapes, lengths, angles, heights and widths create billions of different prints.
Using their unique attributes, it becomes simple to see precisely how fingerprints can help solve crimes. Leaving fingerprints at a crime scene is more like dropping a calling card there. There are a few unique ways fingerprints get left behind by careless crooks. The most common way is by oil or fat that’s transferred by the finger onto an object such as a doorframe or desk. Amino acids in the finger might also leave a discernable mark. Fingerprints may also be seen as an impression in a soft material like putty. Finally, they are sometimes drawn up by substances on the finger such as paint or blood.
Uncovering fingerprints to help resolve a crime could be carried out in a couple of ways. Adhering powders onto new fingerprints will make the powder adhere to the grease making the fingerprint visible. Another technique is using a few drops of cyanoacrylate. When these drops are warmed, they vaporized and the smoke attaches to the fingerprint leaving a clear white print. Specialised crime scene laboratory equipment can also find fingerprints.
Fingerprints can be stored for further investigation in many of ways, such as: taking photographs of the print and storing them on a tape or rubber lifter.
Ideally, from a crime-solving perspective, it is hoped that the interconnected nature of our society will gradually lead to having all fingerprint databases linked for effortless cross-reference.