The Impact of Henna on Non-Porous Surfaces and The Quality of Latent Fingerprint Development: A Comparative Analysis with The Utilization of Enhancement Powder

Abstract

Fingerprints are one of the most important evidence in criminal investigations and frequently found at crime scenes. In order to avoid being discovered, criminals use a variety of strategies, such as utilizing tools or protective layers instead of making direct contact with surfaces with their bare hands. The use of daily products like henna has emerged as an effective way of modifying fingerprints chemically or physically. The purpose of this study, which was conducted at Universiti Teknologi Mara in Shah Alam, was to investigate how enhanced fingerprint quality was influenced by both synthetic and natural henna on various non-porous surfaces. The main objectives were to compare and evaluate fingerprint quality using natural and synthetic henna and to investigate how henna affects fingerprint development and visibility. The research additionally examined at the on non-porous surface of metal, plastic, and glass surfaces.