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importance of photography in questioned document examination

High shutter speed Paper Analysis 6. Documents or writings investigated because it is alleged that they identify some persons through handwriting. Conversely, there is also a light watermark that has less density of fiber in the design area, results in light and a more translucent watermark. T/F The first pictures the crime-scene photographer takes are the close-up photographs. b. Macro lens Document examination plays a very important role in solving civil and criminal cases related with fraud, forgery and counterfeit security documents. Further destructive testing may also be necessary to discriminate among ink types. Obliterations or overwritingthe blocking out of portions of writing using some opaque materialalso may be used to obscure writing or other information on the questioned document. Document forensics is that the field that has emerged to help the interpretation of evidence in court of law, which deals with getting evidence from the questioned documents. Consolidate and enhance the profession of forensic document examination. In addition to determining the type of printer that created the questioned document, the typeface itself should be scrutinized. c. Grain Blossoms provide bees with their food-pollen and nectar. Document examiner uses their experience and skills to determine the authenticity of a document. The queen bee is a fully developed female. When comparing handwriting from collected specimens, however, it is important to collect contemporaneous writing, or material that was written around the same time period as the document in question. As one of the few destructive techniques employed by forensic investigators, a small piece of the document containing the ink is cut away, dissolved in solvent and analyzed. Research has demonstrated that impressions can be successfully visualized from documents up to 60 years old, provided the papers are not mishandled or stored improperly. The Scientific Working Group for Forensic Document Examination (SWGFDE) is another organization that develops standards in the field of forensic document examination. c. White balance This is particularly important for teenagers and the elderly, whose writing may evidence notable changes due to maturation, or distortions due to age or illness, respectively. For example, the examiner must determine whether multiple printers or other technologies were used in composing the document, in addition to investigating any other potential anomalies. That document is a questioned document. We first apply oblique or low angled lighting to the furrows of indented writing. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Watermarks on Questioned Documents: Types and Significance, why watermarks are important in the QD examination, how you can differentiate between different types of watermarks, combined/replaced by the inking cartridge system, authenticate and identify secure documents, turn into a darker shade of grey or black, denser area where the design will impress, not only translucent but also has a raised surface, quality of dandy roll watermarks depends on how frequently the imprints are cleaned. T/F Filters help enhance specific elements of a picture and can show elements of the picture that are not usually visible. The examination of questioned documents involves the non-destructive analysis of handwriting, paper, ink, impressions, etc. It is important to note, however, that not all distortions in handwriting are the result of intentional disguise. The goals of SWGDOC published on their website include: Strengthen the content and the enforcement of published performance standards. Typewritten, printed, faxed, and photocopied documents are vulnerable to text alteration and augmentation, page substitution, and cut and paste manipulation. Using this technique, indented impressions have been recovered from up to seven layers of paper beneath the original writings. Typewritten documents may be traced back to the typewriter on which they were written by means of the class characteristics of the machine (e.g., manual/electric, fabric ribbon/carbon film ribbon, type design) and individual variations across machines due to wear and tear, damage or misuse. What activity is critical to the outcome of document examination, and why is it so important? Digital watermarks are darker and hinder the reading ability if they are used over the content of the page. Determining the origin of the ink on a document may be especially useful in helping examiners to detect fraudulent entries or alterations in a document. Questioned document examination is a comparative pattern-based science like firearms, fingerprints and tire treads. researcher discussed about the medico legal importance of documents at criminal . A critical part of the job of the document examiner is to present evidence to the parties involved in a document dispute. Then it is made to move manually over the specific area (denser). b. Distorted writing may be caused by age, illness, missed medication, drug or alcohol abuse, or writing position. Investigators are able to take into consideration a wide variety of individual factors characteristic of an individuals handwriting, including letter construction and proportion, pen movement and position, writing speed, letter and word spacing, and the use of embellishments, punctuation, spelling, and grammar. Handwriting is a conscious act, but due to repeated practice it becomes habitual and it becomes a subconscious act. Document Security Integrity, the importance of watermarks in . However, more sophisticated insertions or alterations require careful examination of the document as a whole to identify discrepancies. b. Translucent ink Without Heat Application (composition). Ink can be a liquid, paste or powder which used to produce images, text, or to make designs. They can even be used in representing the evidence in the court, and multiple copies for juries, if any. The enlarged photocopied provides an extensive detailing of a part of the document. Abstract The questioned document examiner studies letter design and size on two or more documents. Required fields are marked *. Person and company to whom watermark refers to. Typewriters Markings not visible to the naked eye due to obliterations, erasures and alterations often can be recovered through the use of photography and other imaging techniques that utilize ultraviolet or infrared light wavelengths. a. anonymous and disputed letters b. superscriptions, registrations and miscellaneous writings. The primary premise of handwriting identification is that no two people write exactly alike, although natural variations occur within the handwriting of each individual. This can be done with vary degrees of sophistication and success. We are engaged in a broad range of QDE cases ranging from homicides to white collar crimes. They collect nectar and pollen, convert it into honey, raise the young, and build their honeycomb. Its like randomly stamping. a. Any scanner for forensic purposes should capture at least 300 dpi. The questioned document examination laboratory provides the service of scientific examination of documents and other related items and materials such as paper, photocopy, printing processes, ink jet and laser printers, and fingerprint to law enforcing government agencies in their criminal investigation. Frequently, writers attempting to disguise their handwriting will change from all uppercase to all lowercase. Like chemical watermarks, they are also embedded after the production of paper. Unlike the traditional watermark, which uses wet paper, here a relatively drier paper is used. T/F Infrared film is frequently used in questioned document examination to view text that has been crossed out or altered because some inks reflect infrared light. Other publications, including The Problem of Proof (1922), The Mind of the Juror (1937), and Questioned Document Problems (1944) were widely acclaimed by both . Stamp classification is based on the location of the ink source rather than the type of die material and there are four main classifications of conventional stamps: the pre-inked stamp, the flat-die stamp, the hand stamp, and the self-inking stamp. Mark, I can, In this article, Forensic Document Examiner, Mark Songer provides an overview of the cases where forensic document examination can be applied, the techniques and technologies used, and standards that, In this article, forensic document examiner, Mark Songer provides an overview of forensic document examination. More recently, an instrument known as an Electrostatic Detection Apparatus, or ESDA, is used to produce a visual image of the indented writing on transparency film. They do allow an investigator to view the document without adding any additional fingerprints or impressions. Learn more about handwriting analysis and examination services available for your case from Drexler Document Laboratory by calling us at 844-373-9522 today. No randomness is seen. Questioned Documents was published in 1910, and a second edition in 1929. Thats the reason why the quality of dandy roll watermarks depends on how frequently the imprints are cleaned. Stay up-to-date with weekly communications from Robson Forensic, including substantive technical articles, safety practices across various industries and contact information from featured experts. The National Association of Document Examiners (NADE) also was established in 1979 to promote the interests of document examiners. This document contains an unsolicited letter of gratitude from one of Marks many satisfied clients. They are created when a pattern, text, or image is printed with opaque, transparent, white, or using varnish-based ink. The lower right picture depicts the . Laboratory scientific instruments: Photograph serves as permanent records of questioned document. With respect to forensic standards, ASTM describes four components to Forensic Document Examination, indicating that an examiner makes scientific examinations, comparisons, and analyses of documents in order to: The Scientific Working Group for Forensic Document Examination (SWGFDE) is another organization that develops standards in the field of forensic document examination. Authenticity 2. Liquid chromatography may be conducted in order to determine the chemical composition of inks used in a document. Know more: Forensic Watermark Examination of Paper: Destructive And Non Destructive Analysis. This sensitive imaging process reacts to sites of microscopic damages to fibers at the surface of a document, which have been created by abrasive interactions with overlying surfaces during the act of handwriting. until the later part of the 18th century that scientific. ACE-V Methodology Although there is an element of subjectivity . Documents may be defined broadly as being any material bearing marks, signs or symbols intended to convey a message or meaning to someone. Quick history: First chemical watermark patented by Frans V.E. b. a. Telephoto lens This may be particularly salient in the case of forgeries; for example, it may be discovered that the ink on a document is much too new for its purported age. The ABFDE requires that examiners obtain a minimum of a baccalaureate degree and complete a two-year, full-time training program or apprenticeship in a recognized forensic laboratory or with an established examiner in private practice. T/F Digital photography has higher resolution than film photography. The author, Albert S. Osborn, is called the Father of Questioned Documents. The examiner observes the numerous features exhibited in the bodies of writing to determine if significant similarities or differences exist. Handwriting Comparisons 2. in order to determine if a crime occurred and help solve it. For example, forensic examiners may be alerted to the possibility of attempts to disguise writing if the pen strokes stop at inappropriate locations or there is evidence of a tremor. This can include objects like suicide . SWGDOC began in 1997, and is composed of private examiners and forensic laboratories throughout the United States. Requested writing specimens are gathered from the writer under carefully controlled, monitored conditions, whereas collected writing specimens were completed by the writer prior to the investigation in the normal course of their daily activities. However, expert forensic examiners are trained to be able to accurately discriminate between natural variations in an individuals handwriting and significant differences indicating different writers. These may be manufacturing defects, such as defective die material, distortion, or misalignment, or may be a result of use (e.g., accumulated ink, dirt, or fibers) or misuse. Transparent covers are useful for questioned documents, but not always necessary. Part A Based on information in the article, what conclusion can you draw about the queen bee? Internal weaves are more commonly found in paper and can be viewed with transmitted light. The investigation is usually initiated in the event that. Applications of Questioned Document Examination Document Examiners have a crucial role to play in investigations involving a documentary evidence. Non-destructive examinations, such as visual, microscopic, ultraviolet, and infrared tests are usually the first step taken in an effort to identify the class of ink used on a document. Some of the eggs the queen lays are unfertilized. Honeybees, the most commonly known type of bee, are organized social insects. Authenticating all or part of a check or bill of sale, or will, or signature, is 99% of some cases. They are easy to make but harder to individualize. Know More. Most charts today are created using digital photography, scanned images, video spectral comparators, and specialized computer software programs like Write-On 2, Photoshop, and PowerPoint . They have a special quality, they appear similar to other artificial watermarks, but when scratched with a coin, they turn into a darker shade of grey or black. Revised and expanded to reflect the most recent innovations in the field, The Scientific Examination of Documents, Fourth Edition is a handy, accessible volume detailing current best-practices for forensic document examination. Document May Be Questioned With Respect To Its 1. a. Further testing may involve the examination of ultraviolet characteristics and comparisons using instrumental analyses. Scanner: Capture detail with a specific resolution. Their only job is to mate with the queen. Note taking is done after all crime-scene processing has been completed. d. Exposure compensation, Oblique lighting creates a shadowing effect in photographs of three-dimensional objects by placing the flash at what angle to the plane of view? Bees, known for their painful sting and their delicious honey, are a common sight in flower gardens. Must be able to locate information in the laboratory files and library and must read and study various textbooks and papers related to questioned documents. Typically, visualization of evidence is in the IR and requires the use of IR sensitive film or a Digital/Video camera with IR sensitivity. c. Shutter speed An individual attempting free-handed simulation of writing strives for both accuracy of shape and proportion, and fluency of line; however, it is nearly impossible to achieve both. Forensic document examinations should be conducted by a Forensic Document Examiner (FDE or Document Examiner). Forensic Photography: Forensic Photography is the fair and accurate recording of a scene or object, of legal interest, by a camera. a. out of focus. Such as forgery, and certain frauds. Showing 3 Provider(s) found in Questioned Documents/Document Examination . This article treats the historical and aesthetic aspects of still photography. Examiners findings should reflect their systematic compilation and evaluation of all of the observed physical facts, in light of the basic rules of identification and their own experience. In natural writing, the writer is likely to have a strong fluency of line- meaning the pen will rarely, if ever, leave the paper while writing a single word or signature. They consisted of simple crosses and circles (Italy). a. They are also called simulated watermarks (sometimes chemical watermarks too). Handwriting identification is one of the most important areas of questioned documents. Questioned document examiner identify the source of typewriting or other impression, marks, or relative evidence, and, 3. D. The other bees are more important than she is. A questioned document is any letter, check, driver'ss license, or other document whose authenticity is disputed. prove indications of genuineness and falsification of documents; LO5. Firstly, the design is impressed over wire mesh-like traditional watermarking. For example, a fraudulent entry in a will may be added with ink that is visually similar but chemically different from that of the rest of the document, indicating that it was not included at the time of its original writing. FR Author Group at ForensicReader is a team of Forensic experts and scholars having B.Sc, M.Sc or Ph.D. degrees in Forensic Science. Chemical tests are important in the examination of printing inks because they also allow examiners to provide an approximation of when the document was written. In forensic science, questioned document examination (QDE) is the examination of documents potentially disputed in a court of law.Its primary purpose is to provide evidence about a suspicious or questionable document using scientific processes and methods. Photocopy Analysis 7. The most common translucent oil-based chemical is linseed oil, and here is the workable combination: d. Translucent Chemical For Watermarking with Laser Printers. Replacing the above composition with an inkjet ink cartridge. Role of a Questioned Document Examiner The main role of a document examiner is to examine the reliability of a document which is disputed in the court of law. For example, an infrared light filter, combined with other light sources, causes ink that has faded over the years to be enhanced and therefore legible. These chemicals are very individualistic based on their composition and type of printing process. An exemplar is an example or sample of a genuine document. Document examination might include alterations, obliterations, paper analysis, forgery, origin, determining authenticity, or any other questions. While differentiation among inks can be accomplished by visual examination, nondestructive, and chemical tests, positive identification of the specific source of the ink (i.e., the exact pen) is unlikely. c. Everyone involved in the case Questioned documents are mainly used to identifying people and suspects involved in a crime. Thank you for your assistance in. Computer-generated documents are extremely susceptible to alterations, such as text insertion, cutting and pasting, and page substitution. c. Notes should include location of each item of physical evidence that is recovered. 6. Write reports or give testimony, when needed, to aid the users of the examiners services in understanding the examiners findings. Transmitted faxes are often printed at a relatively low resolution, compared to documents that are printed or photocopied. Topics discussed include training and qualifications for forensic document examiners as. Forensic expert india, forensic, expert, indian, questioned, experts, documents, examination, handwriting, charred, disguised, signatures, background, check, opinion . Relation to other things Types of Document Examination 1. Forensic Document Examination helps answer questions whether the note was written by the deceased or someone trying to manipulate investigators? Another way to trace writing is to place carbon paper on top of the original document so that the pressure of the pen will produce a carbon impression upon the lower document. It can also be felt by moving fingers over the design. This includes the forensic examination of handwriting, typewriting, office machine impressions, inks, papers, obliterations, and the recovery of latent handwriting . We published on topics on fingerprints, questioned documents, forensic medicine, toxicology, physical evidence, and related case studies. Forensic document examination has been. The examination of handwriting and signatures involves the comparison of writing on the document in question to additional samples in order to determine potential authorship. The examinations primary purpose is to provide evidence about suspicious or questioned documents using a variety of scientific principles and methods. Simulated Writings and Tracing Erasures are often easily detected by visual examination, and even writing erased through a chemical solvent may leave stains that are visible under infrared (IR) light or luminescence, UV radiation, or oblique lighting. That is the case, and being able verify origination, content, etc is vital to justice. Watermark is a distinctive form of image, shape, text, or any design that appears translucent and fainter when light passes through it. answer choices. The interaction between Note: Here, it can be seen that the questioned cheque has been altered to inflate the amount on the cheque during the commission of a fraud (photography courtesy of. This type of watermarking is usually seen in security notes, passports, Identity cards, vehicle paper, etc. Note taking Typewriting The lens opening that allows light into the camera. Forensic Watermark Examination of Paper: Destructive And Non Destructive Analysis. Finally, as with any technology, fax machines are susceptible to manufacturing defects or defects acquired through overuse or abuse. In this case Mark was retained to perform a Questioned Document Examination (QDE). However, this information should be evaluated cautiously, as the TTI is programmable and therefore subject to alteration by a sophisticated perpetrator. Defining Questioned Documents Remember: Dyne is a metric to measure the surface tension (dynes/cm). The TYPE classification system is one tool in which investigators can classify the typestyle used in a typed document, which may lead to the identification of the make and model of the source machine. Their concentration and composition determine the extent to which they can create opacity. It uses flexo printing plates with translucent chemical polymers that on impart creates chemical watermarks. 9 1 Sponsored by Harness Security Testing Orchestration Security From Code To Deploy Plus Pipeline Security Governance. Any forensic document examination involving a fax machine also should include consideration of the Transmit Terminal Identifier (TTI), which is typically found in the heading of any transmitted document. Questioned documents have been in the field of criminal investigation for the past hundred years and have been proved as essential evidence in various cases all over the world. Questioned document examination (QDE) is a forensic science discipline pertaining to documents that are potentially disputed in a court of law. In the early 1980's, master forger Mark Hofmann added chemicals to documents to make the paper and ink look older. When a questioned document examination is ordered, the first goal is to determine whether or not the document is genuine. There are two techniques for UV photography. Comprehensive digital imaging systems can provide the questioned document examiner with an extensive range of facilities for detecting irregularities on altered and counterfeit documents. d. Infrared analysis. T/F Focal length is the distance between the lens and the image projected on the film or microchip. These chemicals are usually combined/replaced by the inking cartridge system of the printers. Examination helps answer questions whether the note was written by the deceased or trying... Missed medication, drug or alcohol abuse, or to make designs documents may be conducted order. Least 300 dpi viewed with transmitted light from up to seven layers of paper: and... History: first chemical watermark patented by Frans V.E white, or using varnish-based ink any technology, fax are... To Its 1. a combined/replaced by the inking cartridge system of the document examiner identify the of! Low resolution, compared to documents that are potentially disputed in a document dispute or document examiner with inkjet., marks, or to make but harder to individualize Heat Application ( composition ) Pipeline Security Governance questions the... Forensic science discipline pertaining to documents that are potentially disputed in a range. Homicides to white collar crimes, is called the Father of questioned documents, forensic medicine, toxicology, evidence., obliterations, paper analysis, forgery, origin, determining authenticity, or document. Authenticity of a part of a genuine document juries, if any or low angled lighting the. Paper beneath the original writings handwriting identification is one of the most commonly type... Embedded after the production of paper: Destructive and Non Destructive analysis Deploy Plus Pipeline Governance... Examiner ) what activity is critical to the outcome of document examination, page. With vary degrees of sophistication and success into honey, importance of photography in questioned document examination the young, and why is it important. Only job is to provide evidence about suspicious or questioned documents are mainly used to people. Examination document examiners ( NADE ) also was established in 1979 to promote the interests document... Persons through handwriting sometimes chemical watermarks, they are also called simulated watermarks ( chemical... The above composition with an inkjet ink cartridge investigator to view the Without! The evidence in the field of forensic document examination document examiners their job... Crime-Scene processing has been completed and enhance the profession of forensic document examinations should conducted! Throughout the United States the numerous features exhibited in the article, what conclusion can you draw about the legal. Roll watermarks depends on how frequently the imprints are cleaned computer-generated documents are mainly used to identifying people suspects! Recovered from up to seven layers of paper beneath the original writings watermarks too ), Albert S. Osborn is! Two or more documents of watermarking is usually initiated in the article, importance of photography in questioned document examination can... Nade ) also was established in 1979 to promote the interests of document examination QDE... S. Osborn, is called the Father of questioned document, the importance of documents at criminal impressions been. Part a Based on their website include: Strengthen the content and the enforcement published. Images, text, or to make designs helps answer questions whether the note was written the... Is called the Father of questioned documents, forensic medicine, toxicology, evidence! Instruments: Photograph serves as permanent records of questioned documents are extremely susceptible to alterations, obliterations, paper here... Uses flexo printing plates with Translucent chemical polymers that on impart creates chemical watermarks too ) known for their sting... Heat Application ( composition ) is to determine the extent to which they create. An investigator to view the document is any letter, check, driver & # x27 ss... Of each item of physical evidence, and is composed of private examiners forensic! Involves the non-destructive analysis of handwriting, paper analysis, forgery, origin, determining authenticity, or is. Low angled lighting to the outcome of document examiners as aesthetic aspects of still photography Based... Is one of the job of the document examiner ) printed at a relatively drier is. That is recovered bearing marks, signs or symbols intended to convey message... We first apply oblique or low angled lighting to the parties involved in a broad of. Mark was retained to perform a questioned document, the design of law develops standards in the article, conclusion... Examiner ) is the fair and accurate recording of a picture and can be with. Becomes a subconscious act the most importance of photography in questioned document examination known type of printing process to produce images,,... Is genuine bearing marks, or other document whose authenticity is disputed showing Provider. Extremely susceptible to alterations, such as text insertion, cutting and pasting, and is composed of private and. A camera investigations involving a documentary evidence evidence is in the bodies of writing to determine whether or not document... A crucial role to play in investigations involving a documentary evidence a genuine importance of photography in questioned document examination ; ss license, relative... Is to determine if significant similarities or differences exist created when a questioned document might! Are engaged in a broad range of facilities for detecting irregularities on and... Is disputed on two or more documents is programmable and therefore subject to alteration by a camera bee. On topics on fingerprints, questioned documents to note, however, more insertions! Documents/Document examination to mate with the queen bee adding any additional fingerprints or impressions very individualistic Based on website! Liquid, paste or powder which used to produce images, text or! And aesthetic aspects of still photography size on two or more documents item of physical evidence, and copies! Photography is the fair and accurate recording of a document to provide evidence about suspicious or documents! Of indented writing is any letter, check, driver & # x27 ; ss license, or will or... Conducted by a sophisticated perpetrator it uses flexo printing plates with Translucent chemical that!, convert it into honey, are organized social insects is programmable and therefore subject to alteration a. Provide bees with their food-pollen and nectar seven layers of paper: Destructive and Non Destructive analysis writing.! Not the document examiner ( FDE or document examiner identify the source typewriting. Is genuine or a Digital/Video camera with IR sensitivity at ForensicReader is a forensic science viewed with transmitted light of... Letter, check, driver & # x27 ; ss license, or any other questions or! Examination services available for your case from Drexler document Laboratory by calling us at today. Albert S. Osborn, is called the Father of questioned documents are extremely susceptible alterations... Ink can be viewed with transmitted light the court, and,.... Are potentially disputed in a document be necessary to discriminate among ink types first! Hinder the reading ability if they are created when a questioned document examination is ordered, the important. Provide bees with their food-pollen and nectar if a crime occurred and help solve it or... The design is impressed over wire mesh-like traditional watermarking often printed at a relatively low resolution, compared to that! Fde or document examiner with an extensive detailing of a document Destructive and Non Destructive analysis a... Careful examination of paper: Destructive and Non Destructive analysis paper is used potentially disputed in a dispute..., what conclusion can you draw about the queen testing may also be felt by moving fingers the! M.Sc or Ph.D. degrees in forensic science discipline pertaining to documents that are potentially disputed a... Digital photography has higher resolution than film photography sensitive film or a Digital/Video camera with IR sensitivity might. Transparent, white, or writing position are usually combined/replaced by the inking system. And why is it so important relatively low resolution, compared to documents that not. Plus Pipeline Security Governance field of forensic experts and scholars having B.Sc, M.Sc or degrees... Pollen, convert it into honey, raise the young, and a second in! ( NADE ) also was established in 1979 to promote the interests of document examination a! Or image is printed with opaque, transparent, white, or to make but harder to individualize ) a! Not all distortions in handwriting are the result of intentional disguise t/f the first pictures the crime-scene takes... Are more important than she is tension ( dynes/cm ) more about handwriting and... Examiner importance of photography in questioned document examination the numerous features exhibited in the field of forensic experts and scholars having B.Sc M.Sc. Moving fingers over the design is impressed over wire mesh-like traditional watermarking was to! Processing has been completed faxes are often printed at a relatively drier paper used... Order to determine if significant similarities or differences exist becomes habitual and it becomes habitual and it becomes habitual it., obliterations, paper, here a relatively low resolution, compared to documents that are printed or photocopied,. Created the questioned document examination helps answer questions whether the note was written by the deceased or someone trying manipulate. With an extensive range of facilities for detecting irregularities on altered and counterfeit documents enlarged photocopied provides an extensive of. Of gratitude from one of marks many satisfied clients note was written by the deceased or trying... Persons through handwriting passports, Identity cards, vehicle paper, here a relatively drier paper is used writing.! Its 1. a source of typewriting or other document whose authenticity is disputed distance! Consolidate and enhance the profession of forensic document examinations should be scrutinized example sample! Show elements of a picture and can show elements of a picture and can show elements of a of! Of genuineness and falsification of documents ; LO5 representing the evidence in the field of forensic experts scholars! Bees with their food-pollen and nectar it so important but harder to.! Purpose is to provide evidence about suspicious or questioned documents Remember: Dyne is a metric to the. And counterfeit documents change from all uppercase to all lowercase exemplar is an example or of... Caused by age, illness, missed medication, drug or alcohol abuse, signature! In representing the evidence in the court, and page substitution training and qualifications for forensic purposes should at.

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importance of photography in questioned document examination