Criminalist II Project Assignment 4
Fingerprint evidence is one of the most
common and important pieces of crime scene evidence. One of the most
important steps in the examination of fingerprint evidence is locating
the prints at the crime scene and accurately processing them.
Fingerprints are usually visualized and lifted using fine particles or
powders (also known as a physical method), such as powder dusting,
luminescent powders, and magnetic powders. There is also a process
referred to as chemical lifting, including such techniques as iodine
fuming, spray reagents, and cyanoacrylate fuming.
A senior investigator has instructed one of the new
recruits to lift possible fingerprints from various spots within the
crime scene and to collect and preserve footwear and tire track
impressions that have been located outside of the abandoned warehouse.
This is the first time that the investigator will be performing these
duties in an actual crime scene, and he has asked you to help him
through the process to ensure that he produces the best evidence. In
this assignment, you will provide a walk-through for the new
investigator on the fingerprinting and casting processes.
The following processes have proven to be reliable for the development of fingerprints:
- Ninhydrin
- Visualization/lifting in blood
- Chemical lifting
- Fume circulation
Address the following in 2 FULL PAGES using the bullet below and using the Four fingerprinting developments listed above.
- Explain the following for each fingerprinting method selected:
- Once the surface/material/substance has been designated for fingerprinting, what is the process of each selected method listed above? Describe and explain in detail using a step-by-step process.
- Briefly explain the purpose of each step.
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