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Benefits of Fingerprints in Solving Crimes

Fingerprints are something that never crosses peoples’ minds daily. In reality, unless somebody is attempting to eliminate pesky fingerprints out of mirrors or furniture, it is unlikely an ordinary person thinks of fingerprints at all.

But for some, fingerprints are a vital part of their job. 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 look the same; not even on identical twins. 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 makes an exceptional mark which can positively identify one individual against another, especially helpful when the individual of interest already has a recorded listed set of fingerprints on record with authorities, military or other government bodies.

Fingerprints comprise 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 may start, stop or divide at any point within the print. The shapes, lengths, angles, heights, and widths create billions and billions of unique prints.

Using their unique qualities, it becomes easy to see how fingerprints can help solve crimes. Leaving fingerprints at a crime scene is more like dropping a calling card there. There are a few ways fingerprints become left behind by careless criminals. The most common way is by oil transfer from the finger onto an object such as a doorframe or table. Amino acids in the finger might also leave a discernable mark. Detection of fingerprints can also be detected as an impressing on a soft substance. Additionally, they can be created by something on the finger like paint or blood.

Revealing fingerprints to help resolve a crime can be achieved in a number of ways. Adhering powders into new fingerprints will make the powder stick to the dirt and make the fingerprint visible. Another way is by utilizing a few drops of cyano-acrylate or superglue. When these drops are warmed, they vaporized and the smoke attaches to the fingerprint leaving a clear white print. Specialised crime scene lab equipment may also locate fingerprints, but, not all jurisdictions have access to all these equipment.

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.

Ideally, from a crime-solving standpoint, hopefully, the interconnected nature of the society will gradually result in having all of the fingerprint databases connected for simple cross-reference.

Study: My Understanding of Fingerprinting

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