John McGinn (Senior Forensic Document Examiner) 

John has extensive practical experience in the field of forensic document examination, including the examination of handwriting and signatures, acquired over 30 years during employment with the Western Australian Police Force, the Australian Immigration Department, and our company Document Examination Solutions.

An an expert witness, John regularly presents evidence in both civil and criminal courts of law.  

Beyond his examination function, John collaborates in research activities with Curtin University WA, and develops practical material for an accredited proficiency testing program delivered domestically and internationally.

A former President of the Australasian Society of Forensic Document Examiners Inc. (2014 - 2018), John continues his involvement in the forensic community as President of the Australian and New Zealand Forensic Science Society (WA Branch).

Tonya Trubshoe (Senior Forensic Document Examiner)

Tonya is a trusted international Forensic Document Examiner, experienced in the application of document examination techniques and the development of related training.  She has conducted and published research on the impact of context effects on document examination and related training methods.

Prior to her current role with Document Examination Solutions, Tonya has been employed as a specialist document examiner by the Australian Immigration Department and the Queensland Police Service. Until recently, she was the lead document examination subject matter expert at the Canberra Institute of Technology.

Tonya has completed a diplomatic posting, as a Forensic Document Examiner, on behalf of the Australian government.  As a result she has worked extensively throughout South East Asia, with a strong focus on the Philippines, Thailand, Vietnam, Cambodia and Laos.