Ch. 6 Flashcards
When does evidence collection and preservation begin?
After the completion of documentation and search for evidence
How many people should be the evidence officers?
1
What evidence should be collected first?
Fragile, easily lost or transient evidence
What should physical evidence be placed in?
A primary container, and then a secondary container
What makes up the most important category of physical evidence for positive identification?
Fingerprints
What can make a print?
Fingers, palms, feet, lips, and ears
What forms can prints be found in?
latent, plastic, visible, and wet
What is the most common light use?
Side lighting
What are different sources of light?
High power flashlight, portable laser, forensic light source
What is the first step when a print is found?
Photograph
What should be done after a print is photographed?
Enhance it based on the type of print found and the surface it is on
What happens if a print is found on an immovable or large object?
Field processing is warranted
What happens if a print is found on a small, moveable object?
The object can be packaged for collection
What is the general fingerprint processing procedure?
Visual Search Photograph Enhancement Photograph Lifting/collection
Latent prints are also known as:
Invisible prints
What is done to latent prints when they are found at the crime scene:
Enhanced/visualized by physical, chemical, instrumental, or a combination of methods
What types of surfaces are fingerprints found on that require a physical method of enhancement?
dry, non-pours surfaces like glass or plastic
What methods are involved when developing prints by physical means?
Colored powders and brushes
What is the most common physical method used for a light color background?
Black powder
Magna powder
Used for shiny surfaces like plastic bags, CD cases, or magazine covers
What happens after a latent print is visualized?
Photograph it
Where is a lifted print placed?
On a backing card
The lift card/backing card becomes:
evidence
Chemical processing can be used to enhanced latents on….
wet and dry surfaces
