At North West Forensic Investigations (NWFI), we provide a wide range of polygraph, forensic screening, and investigative services designed to help companies, legal professionals, and individuals uncover the truth and make informed decisions.
We operate across North West, Gauteng, Limpopo, Mpumalanga, and the Free State — with nationwide service available on request.
We specialize in two advanced polygraph testing methods:
AVSAPRO Voice Stress Analysis (Voice Polygraph)
Non-invasive technology using AI-driven voice stress detection.
Analyses micro-tremors in speech to identify deception.
Fast, discreet, and effective for workplace or personal cases.
Stoelting Biofeedback Polygraph
Traditional polygraph method using sensors to measure:
Heart rate
Breathing patterns
Blood pressure
Electro-dermal (sweat gland) activity
Widely recognized and highly accurate for investigative cases.
Protect your company from unnecessary risk by ensuring new hires are trustworthy and reliable. Our pre-employment screening includes:
Polygraph tests to assess integrity and honesty
CV & reference verification
Qualification checks (matric, trade certificates, degrees, etc.)
ID & driver’s license verification
Criminal record & credit checks
This service helps employers reduce fraud, theft, and workplace misconduct before they happen.
Many businesses schedule polygraph tests every 3–6 months to ensure employees remain compliant with company policies.
Deters theft, fraud, and unethical behaviour
Reinforces accountability in the workplace
Protects company reputation and assets
When theft, fraud, or misconduct occurs, a targeted incident-specific polygraph examination can help determine the facts quickly.
Identifies those who may be involved
Provides clarity in workplace investigations
Supports disciplinary processes with reliable evidence
We provide fast and reliable criminal clearance checks using the Afis Switch biometric system.
Results within 24–48 hours
Ideal for employment, immigration, and compliance purposes
Note: This is not a police clearance, but a professional criminal background verification
Beyond polygraph testing, we also provide comprehensive screening solutions:
CV verification
ID and driver’s license checks
Qualification verification
Credit checks
Work permit & visa verification
As an accredited sales and training agent for AVSAPRO Voice Stress Detection Technologies, we provide professional training for individuals and organizations.
5-Day Course (in-person or via Zoom)
Certification included
Unlimited support after training
Training available nationwide
NWFI provides expert witness testimony for CCMA hearings, workplace disputes, and court cases. We also assist with statement analysis, identifying inconsistencies and truth indicators in written or verbal testimony.
