Questioned document examination
Examination of documents potentially disputed in a court of law / From Wikipedia, the free encyclopedia
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"Graphanalysis" redirects here. For the practice, now considered pseudoscientific, of examining a handwriting exemplar to determine one or more psychological traits of the person providing it, see Graphology.
In forensic science, questioned document examination (QDE) is the examination of documents potentially disputed in a court of law. Its primary purpose is to provide evidence about a suspicious or questionable document using scientific processes and methods. Evidence might include alterations, the chain of possession, damage to the document, forgery, origin, authenticity, or other questions that come up when a document is challenged in court.