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Forensic Identification Services
Document Section

The Document Section is responsible for the processing, examining and identifying latent fingerprints and palmprints found on criminal writings like hold-up notes, counterfit money, real money, threatening letters, fraudulent cheques and hate crimes.


A Fingerprint Technician chemically treats seized currency

Documents received from various units of the Toronto Police Service are chemically treated to develop any latent fingerprints thereon. The developed prints are then photographed and the negatives filed for future comparison.

Any fingerprints found on the documents are compared to the fingerprints of suspects supplied by the investigating units. If no identification is made, the found prints, if suitable, are searched via AFIS

If an identification, or "match" results from comparison or search, the Fingerprint Technician who found the fingerprint on the document will, if required, present the identification evidence in court.

On average, the Document Section processes 14,000 items yielding 2,600 fingerprints found and 750 identifications annually.

Processes Used:
DFO Amino acid reagent, requiring an alternate light source to visualize
Ninhydrin Amino acid reagent
Physical Developer Silver based process that reacts to lipids, oils and waxes in fingerprint secretions
 

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