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Collecting Footwear Evidence


Footwear Evidence
Footwear evidence is always left… it is a matter of if it can be found.
Physical contact between footwear and a viable surface leaves a transfer of class and individual characteristics
Both can be used in identification of possible suspects


Footwear Individual Evidence
Individual Characteristics can be used to identify an exact shoe.
However, these can change over time


Information Application
Link suspect or victim to scenes
Link two crime scenes
Location of prints can:
Lead to more evidence
Refute alibis--a defense by an accused person purporting to show that he or she could not have committed the crime in question



Suspected Persons Footwear
All footwear a suspect owns should be seized for comparison
Shoes are needed to make test impressions


Eliminating the Innocent
Footwear worn by police officers, medical personnel should be accounted for when considering impressions left at scene



Known Footwear Impressions

Examiner will make impressions of known footwear and compare them with suspected footwear impression to insure matching samples are highly detailed, and have individual characteristics of shoes



Footwear Evidence Collection
Detection and recovery of footwear evidence from scene of crime is important because different shoes will leave behind prints of various sizes and patterns.


Control of Scene
It is important to have control over the crime scene to
Prevent destruction of evidence
Limit the amount of unrelated prints made



Documenting Footprints
Footprints location should be documented and photographed
Enhancing evidence as necessary
Some prints can be visualized by darkening a room and using a bright light at a low angle.



Photographing Footwear Impressions
Quality photographs should be taken of impressions if they can not be transported
Photographs are taken for later comparison with suspected footwear, therefore they must be very clear
Scale should be used to gauge size of footprint



Recovering Footprints
Objects with footprints should be removed if possible (paper, glass)
Since this is often not an option then…
Examination and photograph with rule for size comparison
Producing known impressions of shoes being examined
Comparing crime scene impression with footwear




Link to Lecture Slides: https://drive.google.com/file/d/1jWDw...

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