Forensic Document &
Handwriting InstituteGauteng · KwaZulu-Natal
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Our experts

Experienced examiners. Independent opinions.

Two forensic document and handwriting experts with more than 64 years' combined experience in the South African Police Service, now serving clients independently from Gauteng and KwaZulu-Natal.

Col (ret'd) Marthinus T. du Toit, forensic document examiner (Gauteng)

Col (ret'd) Marthinus T. du Toit

Forensic Document & Handwriting Expert · Gauteng

Colonel (ret'd) Marthinus du Toit is an expert in the forensic examination of questioned documents, handwriting and signatures, with more than twenty-nine years' experience in this specialised field in the South African Police Service.

His professional work includes formal training, extensive casework, expert testimony, case review, research, and national-level training and development within forensic services from 1994 until 2025.

Col (ret'd) Marco C. van der Hammen, forensic document examiner (KwaZulu-Natal)

Col (ret'd) Marco C. van der Hammen

Forensic Document & Handwriting Expert · KwaZulu-Natal

Colonel (ret'd) Marco van der Hammen is an expert in the forensic examination of questioned documents, handwriting and signatures, with more than thirty-five years' experience in this specialised field in the South African Police Service.

His professional work includes formal training, extensive casework, expert testimony, case review, research, and national-level training and development within forensic services from 1991 until 2026.

Qualifications. A full statement of the examiner's qualifications is attached to every report.

Professional memberships

Connected to international practice

Both examiners are associate members of two European professional bodies in forensic handwriting and document examination.

ENFHEX

European Network of Forensic Handwriting Experts

Associate member

EDEWG

European Document Experts Working Group

Associate member

How we work

Every finding is checked

Peer review is routine. It reduces the risk of cognitive bias, validates conclusions and supports the scientific reliability that courts require.

  • Relevant ISO standards and International Best Practice (IBP)
  • Recognised, published industry standards for document examination
  • Strict chain of custody for every item received
  • Full documentation and imaging of findings
  • Independent peer review and verification by a competent document examiner
  • Transparent conclusions that state both strengths and limitations

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Contact the examiner nearest to you, or send us the details and we will direct your enquiry.

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GautengCol (ret'd) Marthinus T. du ToitKwaZulu-NatalCol (ret'd) Marco C. van der Hammen