Questão FC586262
Read the following text to answer question. Where Fingerprints May be Found Fingerprints can be found on practically any solid surface, including the human body. Analysts classify
Interpretação de Textos (Understanding)
Instituto AOCP · 2025
Read the following text to answer question.
Where Fingerprints May be Found
Fingerprints can be found on practically any solid surface, including the human body. Analysts classify fingerprints into three categories according to the type of surface on which they are found and whether they are visible or not: fingerprints on soft surfaces (such as soap, wax, wet paint, fresh caulk, etc.) are likely to be three-dimensional plastic prints; those on hard surfaces are either patent (visible) or latent (invisible) prints. Visible prints are formed when blood, dirt, ink, paint, etc., is transferred from a finger or thumb to a surface. Patent prints can be found on a wide variety of surfaces: smooth or rough, porous (such as paper, cloth or wood) or nonporous (such as metal, glass or plastic).
Latent prints are formed when the body’s natural oils and sweat which are present on the skin are deposited onto another surface. Latent prints can be found on a variety of surfaces; however, they are not readily visible, and detection often requires the use of fingerprint powders, chemical reagents or alternate light sources. Generally speaking, the smoother and less porous a surface is, the greater the potential that any latent prints present can be found and developed.
Patent prints are collected using a fairly straightforward method: photography. These prints are photographed in high resolution with a forensic measurement scale in the image for reference. Investigators can improve the quality of the images by using low-angle or alternate light sources, but this is usually not necessary.
Adapted from:
https://www.forensicsciencesimplified.org/prints/how.html.
Accessed on: 07 apr. 2025.
The text explains how fingerprints are categorized based on the type of surface they are found on and whether they are visible or not. It distinguishes between three types of prints: plastic prints, patent prints, and latent prints. Based on the explanations provided in the first paragraph of the text, it can be affirmed that
- fingerprints on soft surfaces are always plastic prints.
- latent prints are visible on hard surfaces once exposed to light.
- fingerprints on porous surfaces are more likely to be visible than on nonporous surfaces.
- patent prints, which are visible, can be found on smooth, rough, porous or nonporous surfaces.
- patent prints, which are invisible, are formed when blood, dirt, ink, paint, etc. are transferred from a finger to a surface.
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Comentário do professor
Patente prints são impressões digitais visíveis formadas pela transferência de substâncias do dedo para uma superfície (por exemplo sangue, sujeira, tinta). Por serem evidentes a olho nu, sua identificação não exige reagentes complexos.
O enunciado afirma que essas impressões podem ocorrer em superfícies lisas ou ásperas, e tanto em materiais porosos quanto em não porosos. Exemplos: porosos (papel, tecido, madeira) e não porosos (metal, vidro, plástico). Essa amplitude decorre do fato de que qualquer depósito visível de matéria deixará o padrão papilar reconhecível independentemente da textura ou porosidade.
Na prática forense, por serem visíveis, as patent prints são normalmente documentadas por fotografia de alta resolução com escala, o que garante registro adequado para comparação.
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