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| Cape Polygraph Examiners Cape Town | Cape Town | Cape Polygraph Examiners | |
| Cape Polygraph Examiners Johannesburg | Johannesburg | Cape Polygraph Examiners | |
| Cape Polygraph Examiners Pretoria | Pretoria | Cape Polygraph Examiners | |
| Forensic Polygraph Examiners | Johannesburg | Polygraph Examinations, Forensic Interview | |
| Polygraph Professionals | Polokwane (Pietersburg) | Pre-employment & forensic polygraph testing. | |
| Polygraph Safari | Polygraph, Lie detection, Lie detecting | ||
| Polygraph Vetting Services Ltd | Phalaborwa | Polygraph Test/Security/human resource, recruitmen | |
| Revelation Polygraph Services | STRAND | Polygraph Testing; Lie Detection; Investigations | |
| Voice Stress Analysts SA | Midrand | Lie detection, employment screening | |
| VSA - National Voice Stress & Polygraph Network | Pretoria | Voice Stress Analysis/Polygraph | |
| Xact Analysis - Truth Verification Specialists | Pretoria | Truth and Lie Detection via Layered Voice Analysis |
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