John McGinn (Senior Forensic Document Examiner) 

John has extensive practical experience in the field of forensic document examination acquired over 29 years during employment with the Western Australian Police Force, the Australian Immigration Department, and our company Document Examination Solutions.

In addition to his examination experience, he has been responsible for the development of award winning training products, reference materials and international multi-lateral workshops related to the examination of documents. 

With many years of professional international travel,  John has engaged with government agencies and officials throughout South East Asia and Greater Asia, Africa, the Middle East and Pacific regions.

John is the former President of the Australasian Society of Forensic Document Examiners Inc. (2014 - 2018) and is currently a committee member 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.

She has held positions within the Australian Immigration Department and the Queensland Police Service, in addition to her current consultancy role within Document Examination Solutions and position as lead 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.