John McGinn (Senior Forensic Document Examiner) 

John has extensive practical experience in the field of forensic document examination acquired over 26 years during employment with both the Western Australian Police Force and the Australian Immigration Department.

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

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


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 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.