Serving San Francisco, Oakland, Sonoma County, and across Northern California, California Lie Detector specializes in cutting-edge Computer Voice Stress Analysis (CVSA) and polygraph services.
Our non-invasive voice stress examinations deliver up to 98% accuracy for uncovering infidelity, corporate fraud, pre-employment integrity checks, criminal case interrogations, civil litigation support, and law enforcement screening. By focusing on vocal micro-tremors linked to deceptive answers, our CVSA technology outperforms traditional polygraphs in reliability, speed, and cost. Confidential and professionally administered, our services empower individuals, businesses, attorneys, and agencies throughout the Bay Area to get definitive truth verification when it matters most.
Unmask cheating spouses with our CVSA voice stress examinations, pinpointing deceptive responses about affairs and relationship betrayals with nearly 98% accuracy. Rebuild trust and validate your partner’s claims through discreet, expert-led infidelity lie detector testing.
Protect your company from internal theft and financial misconduct with advanced voice stress analysis that detects stress indicators during fraud inquiries. Rely on our CVSA investigations to secure evidence and deter embezzlement in your workplace.
Enhance your hiring process with CVSA pre-employment integrity screenings that confirm candidate honesty about experience, background, and qualifications. Our voice stress analysis offers Northern California employers a scientifically proven method for risk-averse recruitment.
Support police and private investigators with CVSA-driven deception detection during suspect interviews and witness evaluations. Our technology has facilitated high-stakes criminal case breakthroughs across Northern California with validated confession rates.
Gain a decisive edge in civil and family court matters with CVSA lie detection that uncovers inconsistencies in testimony and witness statements. Attorneys trust our voice stress analysis to bolster litigation strategies and resolve disputes with evidence-backed truth verification.
Equip Bay Area law enforcement with specialized CVSA training and lie detection services for internal reviews, suspect questioning, and staff integrity checks. Join over 3,000 agencies nationwide that depend on our proven voice stress analysis for reliable investigative support.
The CVSA examiner was briefed by the requesting authorities in order to become familiar with the circumstances of each case.
A pre-test interview with the subject was conducted.
The initial test questions were formulated and presented to the subject. Examinations contained from 9-31 questions, consisting of relevant, irrelevant, and control questions for which the subject provided "yes" or "no" answers.
The fourth step included processing the responses with the CVSA instrument, after which the resulting CVSA charts were analyzed and interpreted by the examiner.
If stress patterns associated with specific relevant questions were observed by the examiner, an opportunity was given for the subject to provide additional clarification regarding stress.
Provide a conclusion regarding the outcome of the CVSA examination. If the relevant questions produced a "No Stress" chart, the subject was "cleared" by the CVSA procedure then procedure will be turned over to the requesting agency.