Latent Fingerprints and Development Processes

Delve into the world of latent fingerprints with an introduction to fingerprint patterns, development processes using black, magnetic, and silver powders, as well as techniques involving brushes, wands, and lifting methods. An exercise assignment explores print development on various surfaces and print analysis of recovered patterns.

• Latent fingerprints
• Fingerprint patterns
• Development processes
• Forensic science
• Print analysis

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Uploaded on Oct 06, 2024 | 0 Views

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Presentation Transcript

1. LATENT FINGERPRINTS: AN INTRODUCTION

2. FINGERPRINT PATTERNS http://www.crimescene-forensics.com/Fingerprints.html

3. DEVELOPMENT PROCESS BLACK CARBON POWDER:

4. DEVELOPMENT PROCESS MAGNETIC POWDER:

5. DEVELOPMENT PROCESS SILVER POWDER:

6. DEVELOPMENT PROCESS SILVER IMAGE PRINTS:

7. DEVELOPMENT PROCESS FINGERPRINT BRUSH:

8. DEVELOPMENT PROCESS MAGNETIC WAND:

9. DEVELOPMENT PROCESS LIFT AND PLACE ON CARD:

10. DEVELOPMENT PROCESS LIFT AND PLACE ON CARD:

11. EXERCISE ASSIGNMNENT Surface: For this exercise, I developed latent print(s) from a glass, coffee mug, sheet of paper, ceramic tile etc. It has a smooth, non-porous surface which was flat, rounded, concave, etc. Powder selection: I used black powder or magnetic powder and explain why. Results: I was able to obtain approximately 2, 3, 4 prints from the object selected. Explain whether or not you can see ridge detail with the naked eye.

12. EXERCISE ASSIGNMNENT Print Analysis: o What type of print patterns were recovered? o All whorls, loops, arches, or combinations thereof.