Questioned Documents PPT
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Transcript Questioned Documents PPT
Questioned Documents
Questioned
Document
Any object with handwriting or print whose source or
authenticity is in doubt.
Hitler’s Diaries
Document
Examiners
A match is a subjective and is based on the examiners opinion and
expertise.
Individual evidence.
Everyone’s is unique
Handwriting
Zaner-Bloser System
Palmer System
Handwriting
Analysis
The Hardware – ink, pens, paper, pencils, typewriters, printer…
Visual Examination of the writing
Things to look for:
Variations in
Handwriting
Angularity
Slope
Speed
Pressure
Spacing (within words and between)
Size of letters
Connections
Pen movement (lifts or letter connections)
Writing skill
Dexterity
Flourishes/Embellishments
Diatric Placement (dotting I’s and crossing T’s)
Other
Considerations
Arrangement of writing on page
Diction and Syntax
Alcohol/drugs
Exemplars
Known writing samples for comparison.
What
Exemplars
Must Contain
Same word and letter combinations as questioned document
Length needs to be sufficient to show range of natural writing
variations
Paper and writing implement needs to be the similar/same.
Methods of
Forgery
Simulated forgery : one made by copying a genuine
signature
Traced forgery : one made by tracing a genuine signature
Blind forgery : made without a model of the signature
Genuine Mickey
Mantle
Simulated
Forgery
Traced from
genuine
signature
Transcript
Comparisons
Did document come from same printer, copier, or fax machine.
Use of printing devices create individual characteristics
Tool Marks
Transitory Defect Marks
Things to Look
For
Fax machine headers
Toner
Toner application methods
Mechanical and printing characteristics