Polygraph Services
G17 Polygraph services
When your business is exposed to theft, fraud or insider threats, the consequences are real: financial loss, reputational damage and a breakdown of trust within your team. Polygraph testing helps you get to the truth quickly, fairly and professionally.
At G17 Polygraph, we provide focused, reliable polygraph examinations that help HR teams, business owners and operations managers make confident decisions based on verified information. Whether you’re dealing with suspected diesel theft, stock going missing or concerns around new hires, we help you find clarity.


How polygraph testing works
Polygraph testing is based on the physiological responses a person exhibits when answering questions, such as changes in breathing, blood pressure, heart rate and skin conductivity. These changes are monitored while the subject responds to a structured set of questions.
All G17 examinations are conducted using validated, internationally accepted techniques and equipment. Our examiners are highly trained and operate within the bounds of South African labour law and ethical practice.
The outcome of any polygraph test will be one of the following:
Deception Indicated
Signs of deception were detected
No Deception Indicated
No signs of deception were detected
Inconclusive
Insufficient data to reach a result
A proactive approach to protecting your business
At G17 Polygraph, our goal is not just to detect deception, it’s to help your business build a culture of accountability and trust. We work closely with your team to implement a tailored, compliant and discreet polygraph strategy that supports your operational needs.
Explore our specialised services below to see how polygraph testing is used in different real-world business scenarios.

Diesel Theft

Stock Theft

Livestock Theft

Hijackings
