Forensic Investigation & Detective Services

VIS is the first and only detective agency in India to offer comprehensive range of Forensic and Allied services. We have a full fledged laboratory with latest equipments in line with international standards.

Our expert opinion / report is acceptable in the court. We serve wide range of clients such as corporates, individuals, celebrities, high net-worth individuals, government bodies, etc. Our forensic expert has vast experience working with clients in different industries. If you are looking for the best forensic investigator then VIS is the first name.

We are active all over the globe, majorly in Indian cities like Mumbai, Bangalore, Pune, Chennai, Hyderabad, Noida, Jaipur, Kolkata, Ahmedabad and Delhi for handling Forensic Investigations.

Range Of Detective & Forensic Services

1. Questioned Document Examination

"Questioned" document refers to any signature, handwriting, typewriting, or other mark whose source or authenticity is in dispute. Documents that come under the examiner's purview include wills, contracts, letters, fake certificates, ration card, threatening letters, suicide notes, ransom notes, passports, licenses, photocopies and the like. Forensic Document Examination is an established field of scientific study primarily meant for identification of forgery as well as to establish the authenticity of documents in dispute.

Questioned Document Examination has played a major role in investigating criminal and non-criminal cases like murder, forgery, corporate crimes, counterfeiting, organized crimes and sex crimes.

Case Study :

A known business personality approached VIS to investigate about the fraudulent withdrawal of huge sum from his personal bank account over past few months. He informed us that signature on these cheques are very similar to his, but it is not him who has signed these cheques. As it was his personal bank account, he suspected someone from the family.

After the thorough investigation, we zeroed down on few including his own son whose handwriting was matched with that of those cheques. Our client was shocked beyond imagination, he never suspected his son as he was already paying him the good amount of pocket money.

2. Fingerprinting Examination

Marks and impressions left at a crime scene vary in their value of individualisation. The types of marks that may be identified at a crime scene will be fingerprints (from the tips of the fingers and thumbs), palm prints, and any marks made by skin present on the soles of the feet. Other types of marks or impressions that may also be present at a crime scene are footwear marks, tire marks and tool marks.

Any mark and impression evidence that appears to be fingerprint, palm or foot related is dealt with by the Fingerprint Bureau. In general, each of the Fingerprint Bureau is based at Police Headquarters.

Mark enhancement is the enhancement of latent (undeveloped) marks, so they become visible. This is achieved by using different techniques such as lighting conditions, applying powders, applying chemicals or a combination of all the above. Fingerprint enhancement is dealt with by the Chemical Enhancement team who are generally based within Police Headquarters.

Fingerprint identification assumes that all fingerprints are individual and immutable (i.e. they never change). Therefore, when an identification is made, it is with the assumption that the suspect and no other possesses the fingerprint.

The identification of a fingerprint is basically a comparison and match of two marks.

Traditionally it was the manual comparison between a mark from a crime scene and the fingerprint of a suspect. However, since the introduction of the National Automated Fingerprint Identification System (NAFIS) which is now IDENT1 (which was introduced in 2005) computerised comparisons and identifications have now been made. Procedure varies from bureau to bureau although it is still known for suspect comparisons to be made prior to the mark being submitted to NAFIS if the suspect names are available.

Case Study:

A case of a lady, who was cheated on a property related issue, was received at VIS. The case details revealed that the thumb impression of the client was forged on the documents by her relatives. As a result, her property was fraudulently possessed. Analysis using latest instruments revealed it to be a forged impression.



a. Audio/Video Authentication:

Audio / Video Authentication is a process that is used to ensures the integrity of recording and verifies that the audio/video recorded using it has not been tampered/altered/doctored.


b. Speaker (Voice) Identification:

Identifying an individual solely by his/her speech/voice is called "Speaker (voice) Identification"

The aim of Speaker Identification is to identify the voice of an individual from an unknown speech sample compared with known sample.


what is computer forensics?

Computer Forensic is also known as "Digital Forensic". In forensic science fields it is the process to acquire digital evidence, analyze the evidence and report by examining digital storage media such as hard disks, pen drives etc. or network. The analysis is conducted by a suitably trained forensic science investigator to investigate a claim or allegation as a part of best Forensic Services.


It is defined as "The Science to recovery data from Digital Evidence from Mobile Phone, Smart Phones, SIM cards, Memory cards under forensically sound conditions using smartphone forensic tools and useful under law of evidence"

From Mobile Phone, SIM Card, Memory Card; live and / or deleted SMSs, contact details, Call History, Images, Audios, Videos etc. can be extracted. Whereas in Case of SMART PHONES internet access details, emails and other configuration can be examined.

6. Other Detective & Forensic Services



1. What is Forensic Science?

Forensic science is the application of science to matters of law.

While people are most familiar with the use of forensic science in criminal investigation, it is also used to help resolve civil disputes in areas as diverse as questioned paternity, product liability, medical negligence and insurance claims.

The main function of forensic science is to provide impartial interpretations of scientific evidence for use by non-scientific people in courts of law. The results of a forensic examination can have very serious implications for the accused in an investigation and forensic scientists must show high levels of competence and integrity.

2. How is it used?

Forensic Science often requires the complementary interaction of a wide range of scientific specialities and disciplines and seeks to provide answers to a number of questions.

Questions such as:

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