About Us

We want the truth. So do you.

Polygraph Sciences has been a growing concern since January 2000. The company was founded by John Holtman due to the growing need for the polygraph service, in an attempt by companies to combat crime, especially in the workplace. In 2012, due to the rapid growth of the company and industry, Polygraph Sciences changed their name to Bona Fide Polygraph SA.

Bona Fide Polygraph SA now services hundreds of clients both nationally and internationally. The services offered by Bona Fide Polygraph SA are conducted by fully qualified staff members with accreditation from the American Polygraph Association.

All examiners are members of the American Polygraph Association as well as various other institutions such as, the South African Professional Polygraph Association and the South African Polygraph Federation.

Our services are offered nationally and internationally.

South African Professional Polygraph Association | South African Polygraph Federation | American Polygraph Association Logos

Bona Fide Polygraph SA aims to assist clients to limit stock loss through theft, maintain employee integrity and help to identify suspects in the cases of specific crimes. Forensic Psychophysiology is a growing industry in South Africa and many individuals and companies are realising the benefits of the polygraph.

Bona Fide Polygraph SA have examiners based in Gauteng, Cape Town, Kwa Zulu Natal, Port Elizabeth and Bloemfontein.

Jackie Holtman

Jackie Holtman
Formal Manager / Forensic Psycho Physiologist

  • Trained in Philadelphia at the Academy for Scientific and Investigative training
  • Advanced/Specialized training at the American International Institute of Polygraph
  • Full member of the American Polygraph Association (APA)
  • Member of the South African Polygraph Federation (SAPFED)
  • B.Comm Unisa
Jacquelene Holtman

Jacquelene Holtman
Forensic Psycho Physiologist

  • Training school – AIIP (American International Institute of Polygraph (SA)
  • Associate member of the APA (American Polygraph Association)
Belinda Yardy

Belinda Yardy
Forensic Psycho Physiologist

  • B.luris at University of Pretoria  LLB – UNISA
  • Training school –ASIT (Academy for Scientific and Investigative Training, Philadelphia)
  • Full member of the APA (American Polygraph Association)
Johannes Van Heerden

Johannes Van Heerden
Forensic Psycho Physiologist

  • Training school – AIIP (American International Institute of Polygraph (SA)
  • Associate member of the APA (American Polygraph Association)
  • Member of SAPPA (South African Professional Polygraph Association)