TRUTH VERIFIER SYSTEMS, INC. Celebrates 47th Anniversary

      Truth Verifier Systems, Inc. (TVSI), the first licensed private detective company in the Philippines, noted for its exemplary service, expertise, integrity, ingenious and truthful reporting, marks its 47th Year of Excellence. Founded in May 1966, TVSI is licensed by the Philippine National Police (PNP) with License No.: PDA-001. Through the years of excellent service,…

private investigator agency in manila Philippines

Polygraph Screening Program for Public and Private Service

    The term “polygraph” literally means “many writing”. It refers to the manner on which selected physiological activities are simultaneously recorded. It is an accurate and delicately engineered instrument that records blood pressure, blood volume, pulse rate, sweating and breathing used for investigation, honesty check and pre-employment screening. It may be a conventional instrument,…

“The Captain” is now “A Doctor”

  The President of Truth Verifier Systems, Inc. (TVSI), Capt. Conrado G. Dumlao, also known as “The Captain of Professional Detectives” received his Doctor of Philosophy in Criminology degree at the Philippine College of Criminology (PCCr) during the 51st Graduate School Commencement Exercises that was held at the Manila Hotel on April 20, 2013.      Dr. Dumlao,…