ESDA
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ESDA is the leading technology for detecting indented writing on questioned documents. ESDA works by creating an electrostatic image of indented writing, which is then visualised by the application of charge sensitive toners. The sensitive imaging process reacts to sites of microscopic damages to fibres at the surface of a document, which have been created by abrasive interaction with overlying surfaces during the act of handwriting.
Inside the FBI Questioned Document Unit  http://www.fosterfreeman.com/index.php/fingerprint-evidence/esda-2-col-180-electrostatic-imaging-device

Inside the Questioned Document Unit

Sang Forensic Document Lab http://www.fosterfreeman.com/

Sang Forensic Document Lab http://www.fosterfreeman.com/

Forensic Document Service, Australia  http://www.fosterfreeman.com/index.php/latest-news

Examination of Impressions

Demonstrating ESDA at Glamorgan University  http://www.fosterfreeman.com/index.php/training

Kelly, a final-year Forensic Science student at the University of Glamorgan, demonstrates how to use an ESDA machine (electrostatic detection apparatus), a k.

Walford and North Shropshire College  http://www.fosterfreeman.com/index.php/training

Walford and North Shropshire College http://www.fosterfreeman.com/index.php/training

Greenville Laboratory

Greenville Laboratory

National Forensic Laboratory, Paraguay

National Forensic Laboratory, Paraguay

Fernandez Chavez - Argentina http://www.fosterfreeman.com/

Fernandez Chavez - Argentina http://www.fosterfreeman.com/

Cambell Ashton Private Investigations http://www.fosterfreeman.com/

Document fraud analysis supplied with a professional court report.

Smithsonian National Postal Museum  http://www.fosterfreeman.com/index.php/document-examination

Smithsonian National Postal Museum http://www.fosterfreeman.com/index.php/document-examination

Smithsonian National postal Museum USA  http://www.fosterfreeman.com/index.php/document-examination

Smithsonian National postal Museum USA http://www.fosterfreeman.com/index.php/document-examination

ESD Journal: Electrostatics in Forensics  http://www.fosterfreeman.com/index.php/fingerprint-evidence/esda-2-col-180-electrostatic-imaging-device

The ESD & Electrostatics Magazine

FHNDI  http://www.fosterfreeman.com/index.php/fingerprint-evidence/esda-2-col-180-electrostatic-imaging-device

FHNDI http://www.fosterfreeman.com/index.php/fingerprint-evidence/esda-2-col-180-electrostatic-imaging-device

Nortwich Document Laboratory http://www.fosterfreeman.com/index.php/fingerprint-evidence/esda-2-col-180-electrostatic-imaging-device

Forensic examination of questioned documents, signatures, handwriting, alterations, inks.

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