Latent Fingermarks: A Nonporous Item Essay

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Introduction

Latent fingermarks are best found on nonporous surfaces, as they do not absorb water and have smooth surfaces. Glass, metal, lacquered tables, and doorknobs are good examples of nonporous surfaces. There are several techniques to collect fingermarks from nonporous surfaces: powder method, cyanoacrylate (superglue) fuming, alternate light source, small particle reagent, and dye stain method. I would use one of the most common methods to collect latent fingermarks: cyanoacrylate (superglue) fuming. This technique requires exposing the latent fingermark to superglue vapors. These vapors stick to the marks and reveal them in white color. Although it may require additional techniques to improve the quality of the evidence in some cases, it is still considered an effective, inexpensive, and safe way to acquire fingerprints. The location of nonporous items in a crime scene varies from case to case, as they can be found in all kinds of random places. Investigators should check any item at a crime scene with a smooth surface, usually guns, knives, glasses, doorknobs, and bottles.

Cyanoacrylate (superglue) fuming

As mentioned above, the cyanoacrylate technique is one of the most common ways to develop latent fingerprints. Professionals value this method for its sensitivity to weak fingermarks, practicality, and excellent results. However, superglue fuming is usually used with other techniques to achieve better results. There are many ways to enhance the quality of fingerprints acquired by superglue fuming. One of the most basic ones is dusting the mark with powder. More advanced enhancement techniques include using Rhodamine 6G, gentian violet, or Coumarin 540 on adhesive tapes, polyethylene, and aluminum foil (Bumbrah, 2017). These chemicals are used in combination with different kinds of lasers and forensic light. Although effective, these enhancement techniques may be dangerous for health. Listed chemicals are hazardous and can be lethal if not used safely.

Conclusion

Moreover, forensic and laser lights can cause severe damage to the eye if applied without protecting glasses. These lights can also be damaged due to hazardous UV radiation. These possible negative consequences for health must be considered before using enhancement methods for latent fingermarks developed by cyanoacrylate fuming and all safety measures must be considered before using such methods.

Reference

Bumbrah, G. (2017). Cyanoacrylate fuming method for detection of latent fingermarks: a review. Egyptian Journal Of Forensic Sciences, 7(1), 4-5.

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IvyPanda. (2023, June 18). Latent Fingermarks: A Nonporous Item. https://ivypanda.com/essays/latent-fingermarks-a-nonporous-item/

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"Latent Fingermarks: A Nonporous Item." IvyPanda, 18 June 2023, ivypanda.com/essays/latent-fingermarks-a-nonporous-item/.

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IvyPanda. (2023) 'Latent Fingermarks: A Nonporous Item'. 18 June.

References

IvyPanda. 2023. "Latent Fingermarks: A Nonporous Item." June 18, 2023. https://ivypanda.com/essays/latent-fingermarks-a-nonporous-item/.

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IvyPanda. "Latent Fingermarks: A Nonporous Item." June 18, 2023. https://ivypanda.com/essays/latent-fingermarks-a-nonporous-item/.

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