Forensic Expression of Fingerprints on Various Simulated Crime Scene Surfaces: A Comparative Analysis of Charcoal, Indigo Dye, and Dusting Powder for Latent Finger Print Development and Lifting

Abstract

This study presents a comprehensive examination of latent fingerprint development and lifting comparing the effectiveness of three distinct powders: dusting powder, indigo dye powder, and charcoal powder. The research, conducted at the University of Maiduguri 
Teaching Hospital's Multipurpose Teaching Laboratory, focused on surfaces commonly encountered in forensic scenarios. A comparative analysis was performed on the quality and clarity of fingerprints obtained from Glass, plastic, rubber, padlock, smart phone cover, reagent brown bottle, metal gate surface and drug paper carton. Results from dusting powder revealed a prevalence of "Poor" quality prints, while indigo dye powder demonstrated a balanced distribution between "Better" and "Best" prints. Charcoal 
powder exhibited promising results, particularly in the lifting phase, with a notable percentage of "Best" prints. The findings contribute valuable insights into the nuanced performance of these powders and highlight the importance of context-specific selection 
in powder selection and latent fingerprint examination for forensic practitioners. Recommendations include further standardization efforts, training, collaborative initiation, and technological integration to advance the field of forensic science.