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Could two similar signatures be copies of the same image? What does a scan leave out? Start with a question, explore an example and see how far the evidence takes you.
Forensic methods (9)
A possible image composite
A rectangular boundary around a signature is a visual observation whose origin needs investigation.
Forensic methodsAn inconclusive examination
An examiner may be unable to reach a conclusion about the writer.
Forensic methodsComparing inks
A photographed colour records only one aspect of a pen line.
Forensic methodsFreehand simulation and tracing
These are distinct possible ways a signature might be produced.
Forensic methodsImage overlays
Superimposing two regions helps locate agreement and disagreement between outlines.
Forensic methodsIndented writing
Pressure from writing may leave marks on a sheet underneath.
Forensic methodsPaper, edges and watermarks
The sheet can carry information that is lost in a copy.
Forensic methodsReferring an original to an examiner
A focused question helps determine which materials to submit and how to plan the examination.
Forensic methodsSequence at a crossing
The order of two strokes is a question about the specific place where they meet.
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