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Questioned Signatures, Handwritings, Fingerprints, CD and Tape Authentication, Voice Identification and Comparison, DNA, Biological examination, Chemical Examination, Post Mortem and Medico legal Reports Analysis

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  • EXPERT OPINION on Questioned Signatures, Handwritings, Fingerprints, CD and Tape Authentication, Voice Identification and Comparison

    EXPERT OPINION on Questioned Signatures, Handwritings, Fingerprints, CD and Tape Authentication, Voice Identification and Comparison

  • EXPERT OPINION on Questioned Signatures, Handwritings, Fingerprints, CD and Tape Authentication, Voice Identification and Comparison

    EXPERT OPINION on Questioned Signatures, Handwritings, Fingerprints, CD and Tape Authentication, Voice Identification and Comparison



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Expert Opinion available on Disputed signatures, Hand writing, Forged documents, Finger prints, Ballistics, DNA, CD tampering, Voice analysis, Chemical analysis,
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Age of Document – Determination of age of a Manuscript

In another interesting case, a claim was made in respect of original hand written manuscript of the book written by Swami Dayanand Saraswati (1824-1883), a social reformer and most prominent Guru of Arya Samaj, who wrote his famous book “Satyartha Prakash”.

The manuscript of the book was forwarded to the Central Forensic Science Laboratory of CBI to check its authenticity. On careful examination it was revealed that the manuscript was written using a Ball- Point Pen. As per the history it was known that Ball- Point pens were not in existence during the period of time when Swami Dayanand Saraswati wrote his book. Ball-Point pens came into existence during the time of World War- II, i.e., around 1945.

Therefore, it was established that the manuscript claimed to be in the original handwriting of Swami Dayanand was patently false and forged.

Add. District Judge appreciates the evidence of Dr. S.C. Mittal (Retired PSO, CFSL/CBI)

In case suit no. S23/07 Dinesh Kumar Vs. Suraj Bhan Shri Pitamber Dutt Additional District Judge Tis Hazari courts, Delhi, in his final judgement has not only accepted but appreciated the Evidence of Dr. S.C Mittal and observed:
‘No incriminating material has been come out during his cross examination and the said witness has successfully passed the ACID TEST of cross examination’.

36) The defendant has also examined Dr. SC Mittal, handwriting as DW-4 who has examined the signature over the counter foil of the rent receipts Ex. PW1/3 to Ex. PW1/67 and compared the same with the Admitted Signatures of the defendant and submitted his report Ex. DW4/A. The said expert has opined that the Questioned Signatures marked Q1 to Q34, Q34 to Q36 to Q65 are forged signatures and they are not written by the same persons who wrote the Admitted Signatures marked A1 to A22 attributed to Suraj Bhan. The said witness has been extensively cross examined by the counsel for the plaintiff but he has reiterated his opinion expressed by him vide his report Ex. PW4/A.

Age of Document – Determination of age of Share Transfer Document

Justice Newey of High Court of Chancery Division, London, (U. K.) in a case no. 5436 of 2002 titled Kalvinder Singh Sandhu- Applicant V/s Dr. Sukhvender Kaur- Respondent, observed that :

“Dr. Subhash Mittal, a forensic document examiner called on behalf of Dr. Kaur, expressed the view that the fluorescence documents at the issue tends to confirm that they are of the dates attributed to them. Mr. Gupta disputed the value of fluorescence evidence in the present context, but I do not think I can dismiss Dr.Mittal’s views as clearly without foundation.”

In this case two senior experts of Premier Forensic Science Institute namely Dr. S C Mittal and Shri V.N.Sehgal opined regarding the relative age of document which was not only accepted but also appreciated by the High Court of London.

The background of a case was that a contempt appeal was filed by Mr. Kalvinder Singh Sandhu in the high court of London, alleging that a huge number of shares were transferred in the back date by Mr. K S Sidhu the Managing Director of the Wimpy International in the name of his wife Dr. Sukhvender Kaur showing them as if they were transferred in the year in 2001, 2002, 2004 and 2007. Thus, disobeying the courts direction to make huge payment to his partner, against whom Mr. Sidhu had declared himself insolvent as entire assets of the company in the form of shares were transferred by him in the name of his wife and he had left with no money to pay to the applicant Mr. Sandhu denied the allegation and sought assistance from Premier Forensic Science Institute to determine age of the documents related with Transfer of Shares. The experts of this Institute examined the Share Transfer request letter, the signature of the applicant and the Transferee, Approval of Board of Directors in the AGM and relevant Share Transfer Forms duly filled, signed and attested. During investigation and examination it was observed that all the request letters for Transfer of Shares and the proceeding of AGM the Share Transfer Forms were in order and as per u/s 108 of the Companies Act, the Share Transfer Forms were filed and used within 60 days, as per rules for non-listed companies.

The examination of documents under U.V. Light reveals that the UV-Fluorescence of Controlled Samples of Share Transfer Form for the years 2010, 2011 & 2012 was very strong whereas it was very weak in respect of the Share Transfer Form issued from the period 2000-2004 and it was similar with the controlled samples of the contemporary period. All the records were binded in hard bound registers were intact and there was no evidence of tampering, opening of binding or substitution of pages. It was established from the record of the company that intimation of Transfer of Share was duly given to ROC (Registrar of Company) in the Annual Returns of the company for the period 2000 to 2009 and from year 2005 onwards annual Returns were filed in the Electronic modes and the same was available on the internet on the company’s as well as on the website ROC.

The forensic investigation and examination of the entire record of the company clearly established that the process of share transfer was well within the rules and procedure and any evidence of forgery or back dating was not found in them. UV fluorescence examination and its comparison with the documents of the contemporary period and controlled samples clearly showed the intensity of fluorescence of the Share Transfer Forms of the relevant period confirmed that they are of the date attributed to them.

Another senior forensic expert and Questioned Document Examiner Mr. A K Gupta, having a vast experience of examination of Questioned Documents Cases appeared on the behalf of KPMG and Truth Labs from the side of applicant Mr. Sandhu as expert witness. Mr. Gupta opined that the Share Transfer for the year 2000-2007 by Mr. Sidhu in the name of his wife were back dated on the ground that there were strong tremors in the signature of Mr. Sidhu in the year 2007 to 2009and extent of tremors was so much in the year 2009 that he could not even properly write the word ‘Director’ below his signature.

Mr. Gupta produced a juxtaposed chart showing Tremors in the share transfer forms and the related documents of the relevant period which formed the basis for opinion that all questioned document were back dated as he has shown tremors for period 20002004. However Mr. Justice Newey observed these tremors are on account of use of antidepressant drugs, in particular, which may impair some people’s muscular coordination. As a result, the extent to which a person’s signatures show signs of tremors may decrease as well as increase over time. He further pointed out in Year 2010 -2012 tremors were either missing or were very weak, therefore, the learned Judge didn’t relay on theory of tremor and rejected his opinion.

Upon his opinion the court observed that:

“Mr. Arun K. Gupta, a forensic document examiner of great experience who gave careful evidence, concluded that Mr. Sidhu’s Signatures on the disputed documents identified in paragraphs 37 and 38 (i) above, and also some of the documents referred to in paragraph 40, date from 2007 or later and not from the period during which the documents in Questioned were purportedly created (viz. between March 2001 and December 2004). Mr. Gupta based this conclusion principally on the evidence of tremor he perceived in the relevant signatures. The essence of his reasoning can be found in the following passages from his report:
“A study of these signatures reveals that KSS (i.e. Mr. Sidhu) was having free and fluent writing movement till 2006. He started showing debility of movement and hampering of muscular control resulting in appearance/onset of slight tremors in the signature of 2007… which got aggravated as seen in the signature of 2008…

The deterioration in his writing skill becomes highly pronounced subsequently as seen in the signature of 2009…. So much so that he could not even properly write the word ‘Director’ below his signature. The highly pronounced nature of tremor in 2009 disclosed in May 2010. While the text of the letter has not changed, the signature can be seen to be different.

Tremor can arise not only from ageing but from illness or medication; as Mr. Gupta accepted, antidepressant drugs, in particular, may impair some people’s muscular coordination. As a result, the extent to which a person’s signatures show signs of tremors may decrease as well as increase overtime (if e.g. the person recovers from an illness or ceases to take a medication). That means that a signature showing signs of tremor will not necessarily post -date one that is free of tremor; in fact, Mr. Gupta noted that signatures of Mr. Sidhu dating from 2010 and 2012 have shown a lesser degree of tremor than earlier signatures. In the present case, there is evidence that Mr. Sidhu was taking drugs for both hypertension and, perhaps more significantly, depression in the years after 1999. It is conceivable that the tremor Mr. Gupta observed in the signatures at issue could be attributable to Mr. Sidhu’s health and / or treatment. Mr. Gupta’s evidence is also weakened slightly – through no fault of his own – by the fact that he did not have available to him samples of Mr. Sidhu’s signature dating from 2003 0r 2004.”

Age of Document – Determination of age of a Tender

In another case a contract for the sale of old junk of aero planes was executed between Indian Airlines and a private vendor. An auditor suspected the substitution of the last page of the tender which was showing much lower rate than expected for the sale of aluminium, plastics and rubber parts of the discarded planes. During the examination of the said page of the contract, experts observed that there is mention of a land line telephone number below the name and signature of the vendor.

On checking with the telephone department it was established that the telephone exchange which had issued the telephone line mentioned in the contract was commissioned much later to the vendor than the date of signing the sale agreement.

Thus, it was established that the last page of the sale agreement was substituted and hence forged and backdated documents.

Age of Document – Determination of age of Money receipts

There was yet another case investigated by the experts of the Institute. The case pertained to a number of money receipts and rent receipts which were claimed to be of a particular period and used by a person for some specific purpose.

The Institute was assigned the task to check the authenticity of the money receipts and rent receipts. For arriving at a definite conclusion, opinion of India Security Press (ISP) – Nasik was sought on the Revenue Stamps affixed on the receipts.

On their reply it was established that some of the Revenue Stamps were actually printed and issued much later than the date of execution of the receipts. Therefore, it was conclusively established that the receipts under question were non- genuine and hence fabricated.

Premier Forensic Science Institute experts provide Legal Consulting – Expert Opinion

  • Opinions on disputed hand writings signatures, finger print, fraudulent additions and alterations, forgeries, anonymous letters.
  • Available for appearing in Hon’ble courts as a witness (using sketch demonstration techniques)
  • Forensic photography of disputed documents in courts.
  • Consultation on forensic questioned documents preparation of cross examinations for lawyers.
  • Preparation of technical arguments.
  • Developments of latent finger print from objects & papers.
  • Questioned Document Examination practical training with photographic demonstration (real court cases done) available.
  • Identification of highly disguised writing in any language.
  • Preparation of finger print specimen chart.
  • Opinion on different script like English, Urdu, Hindi and Indian regional scripts.
  • Available for the teaching short term courses on Questioned Documents and Finger Prints (English and Hindi).
  • Lifting chance Finger Prints from smooth surfaces and papers using chemicals.

Dr. S C Mittal, Executive Director, Premier Forensic Science Institute, provides learning sessions on Questioned Document

Documents feature prominently in all manner of business and personal affairs. Almost any type of document may become disputed in an investigation or litigation. For example, a questioned document may be a sheet of paper bearing handwriting or mechanically-produced text such as a ransom note, a forged cheque or a business contract. Or it may be some material not normally thought of as a ‘document’. FDEs define the word “document” in a very broad sense as being any material bearing marks, signs or symbols intended to convey a message or meaning to someone.

Examinations and comparisons conducted by document examiners can be quite diverse and may involve any of the following:

  • Handwriting (cursive / printing) and Signatures
  • Typewriters, Photocopiers, Laser printers, Ink Jet Printers, Fax machines
  • Chequewriters, Rubber stamps, Price markers, Label makers
  • Printing Processes
  • Ink, Pencil, Paper
  • Alterations, additions, erasures, obliterations
  • Indentation detection and/or decipherment
  • Sequence Determination
  • Physical Matching

A trainee must learn how to present evidence before the court in clear, forceful testimony. Fledgling examiners in the later stages of training can get a glimpse into the legal process as well as a better sense of this aspect of their work through participation in a mock trial or by attending actual court hearings to observe the testimony of qualified examiners. These are guidelines and not requirements.

London High Court accepts the evidence of Dr. S C Mittal

Justice Newey, High Court of London Chancery Division in Case No. 5436 of 2002 between Kalvinder Singh Sandhu (Applicant) and Dr. Sukhvender Kaur (Respondent) has accepted evidence of Dr. S C Mittal and in his Judgment he writes:

“Dr Subhash Mittal, a forensic document examiner called on behalf of Dr Kaur, expressed the view that the fluorescence of documents at issue tends to confirm that they are of the dates attributed to them. Mr Gupta disputed the value of fluorescence evidence in the present context, but I do not think I can dismiss Dr Mittal’s views as clearly without foundation; and”
“With a degree of hesitation, I have ultimately concluded that Mr Sandhu’s complaints in respect of the witness statement of 1 December 2009 have not been made out to the relevant standard. Mr Sandhu is alleging very serious misconduct: the dishonest concoction of a large number of documents. In the end, I do not think the evidence is strong enough to prove such misconduct beyond reasonable doubt. In other words, I cannot feel sure that Mr Sandhu’s complaints are well-founded.”

Evidence of Dr. S C Mittal accepted and appreciated by the Justice.

FRRO approves PFSI for registration of International students for study of Forensic Science.

This institute has been approved by Foreign Regional Registration Office (FRRO) for registration of international students for study of Forensic Science.

Govt. of FIJI has recognised and approved PFSI as a study centre for its Police Officers

s.jitokoThe Govt. of FIJI has recognised and approved this institute as a study center for its police officers.

Mr. S Jitoko, Fiji Police officer, has been nominated for  2- years advance diploma course in Forensic Science.  He has completed his first semester.