New Visualizing Agents for Developing Latent Fingerprints on Various Porous and Non-Porous Surfaces Using Different Construction Materials

Background: The fingerprint development technique is one of the oldest and most widely used methods in forensic science for identifying perpetrators. Among the various techniques, powder dusting is a popular method for detecting latent fingerprints. Currently, there is a pressing need to identify a cost-effective, non-toxic, and easily accessible powder that can serve as an alternative to the expensive and hazardous powders commonly used in forensic investigations. Materials and Method: In the present study, latent fingerprints were collected on various porous and non-porous surfaces using samples from different individuals. Grey Cement powder (Ultratech brand) and White Plaster of Paris (POP) powder were applied to 20 surfaces using the powder dusting method, with excess powder removed by a fingerprint brush. Both powders were sourced from local suppliers in Jaipur District, Rajasthan. The surfaces included non-porous materials (e.g., Glass, Soft Plastic, Aluminium Foil, Stainless Steel) and porous materials (e.g., Paper, Cardboard, POP Cast, Bone, Fabric). Fingerprint clarity was rated on a 1-3 scale: 1 for unclear prints, 2 for visible patterns, and 3 for clear ridge details. Result and Conclusion: The Grey Cement and Plaster of Paris powders used in this study were highly effective in developing clear, well-defined latent fingerprints on various non-porous surfaces, including glass, metal, and plastic. Their consistent performance across different materials highlights their reliability and versatility, making them valuable tools for forensic investigators in obtaining high-quality fingerprint evidence. Keywords: Latent Fingerprints, Porous, Non-Porous Surfaces, Forensic Science.