Linton Mohammed is pleased to announce his new book, "Forensic Examination of Signatures" which was published by Elsevier on June 6, 2019. This book is focused on signature examinations and discusses complexity, signature styles, and differentiation of genuine, disguised, and simulated (forged) signatures. It explores possible areas of bias and suggests means to combat and reduce bias. Limitations of examinations involving documents bearing non-original signatures are discussed. The influence of age, illness and writing constraints on signatures are described. Research on validity and reliability of signature examinations are reported. There are chapters on Reporting and Conclusions and Digital Signatures. Three historical high profile cases which involved disputed signatures are reviewed.
Co-contributors to the book are Lloyd Cunningham, William Flynn, Kathleen Nicolaides, and R. Brent Ostrum. The Foreword was written by Professor David Kaye.
The book can be purchased at Elsevier at:
and on Amazon.com at:
Forensic Document Examiners (FDEs), often referred to as handwriting experts, handwriting analysts, or forgery experts, examine documents to determine their genuineness, source, content, or age. While the majority of the work involves the examination and comparison of signatures and handwriting, many cases are multi-faceted and require the examiner to compare inks, process paper for indented impressions, and evaluate any aspect of a document that may be of evidentiary or probative value. In one case, the absence of a pair of staple holes in two pages of a multi-page will was an indication of page substitution.
FDEs are consulted by law firms, financial institutions, insurance companies, government agencies, and other businesses in cases where there are allegations of forgery, alteration of documents, or fabrication of records.
Dr. Linton Mohammed is certified by the American Board of Forensic Document Examiners (ABFDE) and earned a Diploma in Document Examination from the Chartered Society of Forensic Science (United Kingdom). He is a Fellow of the American Academy of Forensic Sciences and served from 2016 -2018 as the Chair of the Questioned Documents Section of the American Academy of Forensic Sciences (AAFS), a member and Past-President of the American Society of Questioned Document Examiners (ASQDE), and is a member of the Chartered Society of Forensic Sciences, and the Canadian Society of Forensic Science.
Linton has testified as an expert witness more than 100 times in his specialty in both civil and criminal cases in the United States, England, Trinidad & Tobago and St. Vincent. A more detailed CV, listing the papers presented and those that were published, is available under the Credentials tab. A Federal Rule 26 listing of prior testimonies is available upon request.
In June 2017, Dr. Mohammed participated in a webinar on Forensic Science Challenges in Fire Investigation and Document Examination hosted by the National Clearinghouse on Science, Technology, and the Law at Stetson University College of Law, Tampa, FL. Dr. Mohammed was the Subject Matter Expert in Document Examination. Here is a link to the webinar:
Dr. Mohammed served for 2 years as a member of the Scientific Area Committee (SAC) for Physics/Pattern Evidence. This SAC oversees Forensic Document Examination, and examinations in Firearms and Tool marks, Latent Prints, Footwear & Tire Track, and Blood Spatter. This committee is working within the National Institute of Science and Technology/Organization of Scientific Area Committees (NIST/OSAC) to develop standards for the forensic sciences.
Linton was also appointed in 2015 to the Expert Working Group in Human Factors in Handwriting Examination. This group is sponsored by the National Institute of Justice and the National Institute of Standards and Technology.
In 2017, Dr. Mohammed was appointed to the Board of Directors of the Academy Standards Board. This is a Standards Development Organization that functions under the auspices of the American Academy of Forensic Sciences.
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