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Chapter 4: Fingerprint Examination - Coggle Diagram
Chapter 4: Fingerprint Examination
Explain the fingerprint features?
Bifurcation
Ridge ending
Short ridge
Ridge dot
Island
Enclosure
spur
Double bifurcation
Trifurcation
Ridge crossing
What were the lab submissions?
There were greater than 1000 occurences per year
Property
Evidence from divisions
Evidence from guns and gangs
Evidence from FIS
Common items
Firearms
ammunition
Drug packaging
Hold-up notes
Explain what is lab analysis?
Fingerprint examination
Range of techniques
Technique is dependant upon the substrate
Techniques can be sequential
Swabs for possible DNA
Explain what is fingerprint exam?
Reactive substances are seen
Eccrine sweat
Mostly water
Amino acids and proteins
Primarily on palmar and plantar surfaces
Sebaceous sweat
LIpids
Primarily associated with hair follicles
Foreign materials
Dirt
Blood
Bodily secretions
Matrix
Sweat
Blood
Other
Substrate
Surface touched
Porous
Paper
leather
tape
Non porous
Plastic
Metal
some tapes
semi-porous
What are the different forensic identification services?
Scenes of crime
Plan drawing
AFIS
Forensic artist
Facial recognition
Photography
Fingerprint lab