Shoe Print Evidence Characteristics
Although unpredictable in their occurrence, the size, shape, and position of these characteristics have a low probability of recurrence in the same manner on a different shoe. Thus, combined with class characteristics, even one identifying characteristic is extremely powerful evidence to support a conclusion of identification. The Scientific Working Group on Shoeprint and Tire Tread Evidence (SWGTREAD) has a published standard that discusses the minimum qualifications and training for footwear/tire track examiners.
Footprints and shoe prints serve as crucial forms of evidence in criminal investigations, providing insights into the individuals involved in a crime. These impressions, made by shoes or bare feet in various surfaces like soft ground or snow, can reveal essential details about the size, sole pattern, and unique wear characteristics of the footwear, which may be linked to specific suspects. Class Characteristics: Characteristics that repeat during the manufacturing process and are shared by one or more shoes.
PPT - Evidence & Investigation: An Introduction PowerPoint Presentation ...
These include: size, design/pattern and mold characteristics. Class characteristics reduce the number of shoes from every shoe in the world to a group of similar shoes. CLASS CHARACTERISTICS Class characteristics are features of an item of evidence that can be used to include or exclude it from a group.
These characteristics for shoeprint impressions include the shape, size, and design. For example, there are many size 10 Nike Air Jordans made with the same outsole (tread) pattern. If we find this pattern at a crime scene, any suspect shoe with these same.
Identifying shoeprints - ppt download
2.1.2 Statement of the problem The tasks for the forensic footwear examiner are: (i) identi cation of class characteristics by comparing the evidence against a possibly large set of knowns to determine generic footwear brand, gender and size, and (ii) individualization of a known print as having been source of the evidence. Exclusion - The shoe print/tire impression was disassociated with the shoe/tire due to a disagreement of class characteristics and/or significantly different damage characteristics. Unsuitable - The shoe print/tire impression has little detail or definition, preventing any assessment of class or individual characteristics.
Forensic footwear evidence can be used in legal proceedings to help prove that a shoe was at a crime scene. Footwear evidence is often the most abundant form of evidence at a crime scene and in some cases can prove to be as specific as a fingerprint. Initially investigators will look to identify the make and model of the shoe or trainer which made an impression.
(Discussion – Impression Evidence Part 1) - ppt download
This can be done visually or by. Footwear impressions as forensic evidence: The screening of footwear impression evidence involves examination, and subsequent comparison, of class and individual characteristics conflated therein. Class characteristics are a fallout of the manufacturing process.
These include the physical size and design of the footwear. In the course of a shoe print examination, these variables are considered independently for each defect and then in combination with all the other defects. These individual characteristics, along with the class characteristics, enable The an examiner to determine the identity or nonidentity of a shoe print when compared with similar characteristics on a suspect shoe.
Existing Approach.
