Comparative Analysis of Black Powder and Small Particle Reagent (SPR) for Development of latent Fingerprints on Non-Porous Surfaces Nayak Vinod C1, Rao Yoshitha Praveen2, Krishnan M Nirmal3,*, Priya Yashaswi4, Singh Harshita5, Singhal Avika6, Tripathi Akshitha7 1Professor, Department of Forensic Medicine, Kasturba Medical College, Manipal 2Lecturer, Department of Forensic Science, Yenepoya Institute of Arts Science Commerce and Management, Mangalore 3Assistant Professor, Department of Forensic Medicine, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India 42nd year MBBS Student, Kasturba Medical College, Manipal 52nd year MBBS Student, Kasturba Medical College, Manipal 62nd year MBBS Student, Kasturba Medical College, Manipal 72nd year MBBS Student, Kasturba Medical College, Manipal *Corresponding Author : Dr. Nirmal Krishnan M, Assistant Professor, Department of Forensic Medicine, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India, Phone : +91-9446706429, E-mail: nirmal.krishnan@manipal.edu
Online Published on 28 July, 2023. Abstract Introduction Fingerprint identification is one of the pioneer methods used for the identification of the perpetrators during the investigation of a crime scene. There are number of developing techniques formulated over the years. Materials and Methods In the study we have compared various techniques used in development of finger print on three non porous structures. All the prints obtained were scored using finger print quality assessment scale. The good quality prints were obtained in freezing temperature on day 1 and day 5 at the same time at room temperature day 6 gave good quality prints. Results SPR method was more effective in developing latent fingerprints from glass and plastic surfaces up till day 6. Black powder method had better mean scores at freezing temperatures for metal, glass and plastic surfaces. Also, the duration of submersion has a significant effect on the quality of the fingerprint; the lengthier the period, the poorer the feature of the prints. Conclusions The result shows that SPR showed good visibility up to day 6 in both glass and plastic surfaces. Though not statistically significant, black powder showed higher mean value at freezing temperature for all the three surfaces. Top Keywords Fingerprints, Non-Porous Surfaces, Glass, Plastic, Metal, Black Powder, Small Particle Reagent, SPR. Top |