Latent Fingerprints and Development Processes
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http://www.crimescene-forensics.com/Fingerprints.html
BLACK CARBON POWDER:
MAGNETIC POWDER:
SILVER POWDER:
SILVER IMAGE PRINTS:
FINGERPRINT BRUSH:
MAGNETIC WAND:
LIFT AND PLACE ON CARD:
LIFT AND PLACE ON CARD:
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.
Print Analysis:
o
What type of print patterns were recovered?
o
All whorls, loops, arches, or combinations thereof.
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.
Uploaded on Oct 06, 2024 | 0 Views
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Presentation Transcript
LATENT FINGERPRINTS: AN INTRODUCTION
FINGERPRINT PATTERNS http://www.crimescene-forensics.com/Fingerprints.html
DEVELOPMENT PROCESS BLACK CARBON POWDER:
DEVELOPMENT PROCESS MAGNETIC POWDER:
DEVELOPMENT PROCESS SILVER POWDER:
DEVELOPMENT PROCESS SILVER IMAGE PRINTS:
DEVELOPMENT PROCESS FINGERPRINT BRUSH:
DEVELOPMENT PROCESS MAGNETIC WAND:
DEVELOPMENT PROCESS LIFT AND PLACE ON CARD:
DEVELOPMENT PROCESS LIFT AND PLACE ON CARD:
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.
EXERCISE ASSIGNMNENT Print Analysis: o What type of print patterns were recovered? o All whorls, loops, arches, or combinations thereof.
