Fingerprints
Upon the completion of the unit you should be able to:
- compare the three major fingerprint patterns of arches, loops, and whorls and their respective subclasses
- identify characteristics of fingerprints, including bifurcations, ending ridges, ridge islands, dots, short ridges, and divergence ridges
- distinguish among visible, plastic, and latent fingerprints
- perform laboratory procedures for lifting latent prints on porous and nonporous objects using chemicals such as iodine, ninhydrin, silver nitrate, and cyanoacrylate resin
- perform laboratory procedures for lifting latent prints on nonporous objects using fingerprint powders such as black powder and florescent powders
- explain the Automatic Fingerprint Identification System
- compare fingerprints collected at a simulated crime scene with the fingerprints of a suspect
Day 1: 2/21 |
Day 2: 2/23 |
Day 3: 2/28 |
What is a fingerprint and why are they left? Today in class we will begin our discussion about the history of fingerprinting, their usefulness, and how they are processed and used in solving crime.
Fingerprints ppt |
Continue discussion on fingerprinting.
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Fingerprint Analysis Lab: Today we will begin to prepare the fingerprint evidence for analysis. You will also create fingerprint ten cards and locate and identify 5 minutiae from your fingerprint.
Fingerprint Analysis Lab Fingerprint Ten Card |
Day 4: 3/2 |
Day 5: 3/3 |
Day 6: 3/7 |
Continue to prepare evidence for analysis. Practice dusting and lifting latent prints.
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Begin Fingerprint Analysis: Today you will begin to investigate the different techniques used to develop prints, such as:
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Finish Lab
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