Documents / Handwriting / Recordings Examination and Analysis Expert Witnesses: 15

SERVICES: Audio and video recording authentication, enhancement, transcription, and analysis, including body worn camera and security video recordings. Acoustic forensic analysis, including audibility of warning signals, speech - voice comparison, and gunshot - weapon recording analysis (e.g., Taser, ShotSpotter).  Audio technology and patent expert witness/consultant. Forensic musicology analysis. Forensic field recording and analysis per ANSI and recognized standards.

EXPERTISE: Consultation in over 800 audio-video and acoustic forensic cases since 1987. Expert testimony over eighty times, in U.S. Federal and State courts including the United States International Trade Commission (USITC), and courts in Canada and International arbitration panels (World Bank-ICSID).

DEGREES/MEMBERSHIPS: Ph.D. UC San Diego (Computer Audio) 1987; Fellow, Audio Engineering Society (AES); Member, Society of Forensic Engineers and Scientists (SFES), Acoustical Society of America (ASA).

Brenda Petty, CQDE, has over 18 years of experience as a Forensic Document Examiner. She is currently a member of the International Association of Document Examiners and has earned the designation of Certified Questioned Document Examiner.

Litigation Support - Ms. Petty has examined over 1,500 cases both nationally and internationally. Clients have included attorneys, individuals, police departments, public defenders' offices, and various government offices. Ms. Petty has testified in 13 states in the United States, most provinces in Canada, the Bahamas, and Bermuda. She has been qualified under Federal Rules of Evidence 702 and has gone through Daubert Challenges favorably.

Ideal Client Engagement: Ideal clients include anyone or any office that needs a document examined for genuineness, questioned signatures, alterations, historical purposes, anonymous writing, election boards verifying signatures. Petty has examined historical documents for content as well as identification and participated in an examination of signatures that involved the 2020 election process.

Areas of Expertise:

Wills Holographic Wills Various Types of Deeds Anonymous Handwriting Questioned Handwriting

Workplace Hostilities Graffiti Writing on Various Mediums (glass, walls, car doors) Historical Documents Election Signatures

Michael T. Motley, Ph.D. has over thirty-five years of experience in the fields of Communication & Psycholinguistics. Dr. Motley serves as an expert witness for opinions on the  clarity, lack of clarity, and most likely interpretation of common messages such as  warning labels, instructions, advertising, contracts, waivers, and so forth. He has served on over 30 cases; about 2/3 for plaintiff and 1/3 for defense. Dr. Motley is a Professor Emeritus of Communication at the University of California at Davis. He has authored almost 200 books, articles, and research papers in communication and psycholinguistics. He has won eighteen excellence awards for his research and was recognized as among the "Top 1%" of communication scholars of the 1970's, 1980's, and 1990's. Areas of Expertise:

• Communication Messages: Meaning, Ambiguity, Likely and Alternate Interpretations, Communicative Intention
• Adequacy/Inadequacy of Messages: Product Warnings, Instructions, Waivers, Advertisements
• Male / Female Misunderstandings: Sexual Consent/Resistance, Date Rape

Services Offered:

• Expert testimony & Consultation
• Opinion on Adequacy of Communication Messages
• Opinion on Likely Consumer Interpretation of Warnings, Instructions, Advertising
• Opinion on Likely Intrepretation of Sexual Resistance/Consent Messages and Behaviors
• Social-scientific testing of expert opinion (his and others')

View Consulting Profile.

Dr. Ron Martinelli, PhD, CMI-V, is a nationally renowned Forensic Criminologist and a federal/state courts qualified law enforcement and premises liability expert who is also a Certified Medical Investigator (physician's level) and a Certified Suicide Investigator. 

Dr. Martinelli directs the nation's only Forensic Death Investigations & Independent Review Team of 26 law enforcement, forensic and medical experts and specializes in officer-involved death cases, civilian self-defense shooting cases and premises liability/security cases. He is a forensic/law enforcement expert to the U.S. Department of Justice, several State Attorney Generals' Offices, numerous major municipalities and nationally prominent private law firms specializing in wrongful death, civil rights and premises liability. 

Dr. Martinelli is the prevailing expert in over 90% of his retained cases. He has saved defendants over $650M and earned plaintiffs over $290 million in jury verdicts and settlements since 2004. He is the media's go-to forensic expert for FOX News, One America News Network, CNN, HLN, Sky News, BBC, NPR, and the History & Discovery Channels. Dr. Martinelli is skilled in officer-involved shootings, in-custody deaths, crime scene reconstruction, forensics, applied sciences, human factors, psycho-medical emergencies and premises liability and security cases. His unique and extensive field experience, combined his academic and scientific credentials, excellent written reports and persuasive testimony, make him a very appealing expert to attorneys and juries alike.

Areas of Expertise:

• Arrests
• Search & Seizure
• Use of Force / Excessive Force - All Levels and Weaponry
• Officer Involved Shootings(OIS)
• In-Custody Deaths
• Criminal Investigations
• Law Enforcement & Corrections Practices, Training & Supervision
• Adult & Juvenile Corrections
• Law Enforcement Negligence
• Civilian Self-Defense, Premises Liability, Security, Foreseeable Harm
• Insurance Cases
• Human Factors

Katherine Mainolfi Koppenhaver, a Board Certified Document Examiner, has been a document examiner for the past 40 years and has testified in court and deposition over 550 times. She has an international clientele. Her book, "Attorney's Guide to Document Examination," was published by Greenwood Press in 2002. Humana Press has recently released her latest book, Forensic Document Examination, Principles and Practice. She has a  support staff enabling her to handle cases in a timely manner.

Contact Forensic Document Examiners for:

• Examination of Questioned Documents
• List of 101 Places to Look for Handwriting Specimens
• Request Writing Forms and Instructions
• List of Publications
• Fee Agreement Contract
• Fee Schedule
• References

California Main Office: 793A East Foothill Blvd., #200 San Luis Obispo, CA 93405

Global Forensic Services, LLC (GFS) is a Forensic Consulting, Laboratory and Investigative Firm offering over 44 years of experience and training in a wide range of forensic science and private investigation disciplines.

Larry Stewart has personally examined tens of thousands of individual items of evidence from sources such as state, local, and federal agencies (e.g. Federal Bureau of Investigation, Secret Service, Bureau of Alcohol, Tobacco and Firearms, Central Intelligence Agency, and others), and foreign governments. On several occasions he has examined cases involving international disputes between governments. 

Mr. Stewart has testified as an Expert Witness in state, federal and military courts of law, as well as in foreign court systems to include; Austria, Australia, Canada, Germany, Sri Lanka and Thailand. He has also testified at The Hague in the Netherlands and three times as an expert before the U.S. Congress. 

Areas of Expertise Include:

Questioned Documents Crime Scene Evaluation Trace Evidence Ink Analysis Age Determination Authenticity Fraud Investigations

Handwriting Daubert and Cold Case (consultant) Investigations Indented Writing Striations Typewriting Erasures Office Machines Tracing

Mr. Broyles represents 19 years experience in providing expert witness and forensic examination services combined with 32+ years experience in research, design & development of computer software and electronic products to include forensic lab equipment and forensic audio/video/image software.  This combination of experience gives invaluable insights into the forensic processes and application in each unique case or project.  Court Qualified.  Detail CV available on request.    

Areas of Expertise:

Audio, Video and Voice Recordings Voice Identification / Comparison / Elimination Forensic Transcription / Transcriptions Surveillance/Time Lapse Video Processing Authentication, Enhancement, Restoration Noise Reduction /Removal / Improve Intelligibility Video Frame/Field Capture and Printing Signal Recovery, Restoration and Clarification Magnetic Microscopy and Imaging Services Vintage/Obsolete Computer Data Recovery and Conversion, Translation

Digital Image/Photograph Analysis Recording Equipment Analysis and Testing Recording Equipment Restoration Playback Speed Correction Media Repair and Cleaning Services Many Tape and Digital Formats Supported Related Litigation Support Technical Research and/of Forensic Applications Dictaphone Restoration and Transfer Services

Specializing in Recorded Evidence Analysis, Enhancement and Restoration Services of Video, Audio, Image, Sound, Voice, Surveillance and Time Lapse Recordings; both digital and analog; through the use of custom and professional analysis systems.

Providing court qualified expert witness services to assist litigation support, public defenders, law enforcement, attorneys, government, and the general public.  Since 2004.  Local, nationwide and international.

Stated goal is to help you get the most from your recorded evidence.   Call now to get started.

Memberships, Affiliations and Training:

• Audio Engineering Society (AES)
• Institute of Electronics and Electrical Engineers (IEEE)
• Law Enforcement Video and Emergency Services Video Association (LEVA)
• New York Institute for Forensic Audio (NYIFA)
• International Association of Identification Rocky Mtn Division (RMDIAI)

Laurie Hoeltzel, PhDc, a Forensic Document Examiner, has studied handwriting examination and apprenticed under some of the leading court-qualified Forensic Document Experts in the United States. She spent 11 years serving her country in the United States Air Force, including three tours of duty in Iraq, while obtaining a Bachelors degree and Document Examination Certificates. Laurie Hoeltzel has been 100% court-qualified and her testimony has always been allowed.

Litigation Support - Ms. Hoeltzel has reviewed numerous signatures and handwritings, examined case documents, and rendered an opinion on cases in AZ, AL, CA, CO, DE, FL, GA, IN, IA, IL, KS, KY, LA, MI, MD, MO, NV, NJ, NM, NY, NC, NY, ND, OH, OK, OR, PA, SC, TN, TX, UT, VT, VA, WV, WI, WA, Washington D.C.; Montreal & Quebec Canada; Freeport & Nassau, Bahamas. She is court-qualified and attorney-recommended. With over 20 years of experience, she is available for depositions and court testimony when necessary, Ms. Hoeltzel offers her expertise to counsel for both plaintiff and defendant NATIONWIDE!

Areas of Specific Training:

• Handwriting Identification
• Signature Comparison
• Distinguishing Forged Signatures Techniques
• Disguised Handwriting
• Altered Numbers
• Anonymous Writing
• Factors that Affect Writing

Disputed Documents or Signatures Analysis on: Wills, checks, contracts, deeds, account ledgers, mortgages, loans, notary disputes, and medical records. Investigation and Analysis for: Questioned signatures, suspect documents, forgeries, identity theft, robo-signing, anonymous letters, bond authentication, alterations, obliterations, erasures, typewritten documents, altered medical records, graffiti, handwritten numbers, suicide notes, and computerized and handwritten documents.

Colorado Office Telephone: 720-724-8077 www.denverhandwritingexpert.com

Texas Office Telephone: 832-827-3052www.houstonhandwritingexpert.com

Arizona Office Telephone: 310-985-2807 www.arizonahandwritingexpert.com

East Florida Office Telephone: 954-745-0752 www.floridahandwritingexpert.com

West Florida Office Telephone: 727-213-5722 www.floridahandwritingexpert.com

August Meyer, QDE is a court qualified Forensic Handwriting and Document Examiner. He has been trained in the examination of handwriting and documents to include simulated signatures, disguised writing, altered documents, ink and paper analysis, and anonymous and threatening notes.

Since 2014, Meyer has worked cases ranging from medical malpractice to title transfers. Through the National Gang Crime Research Center (NGCRC), he has approximately 175 hours of training and education in gang-related activity. In 2016 he was invited to be a guest presenter to the American Handwriting Analysis Foundation and gave a seminar covering gang culture, structure, and graffiti. In this presentation he showed how gang members will often work their symbols into their handwriting allowing an examiner to identify possible gang affiliations and rivalries from nothing more than handwriting.

Litigation Support - Meyer has worked cases across the country from Las Vegas to Indiana. He consults with attorneys to review opposing expert's reports on handwriting to identify and exploit weaknesses. He has successfully testified in court resulting in favorable resolutions for his clients.

Areas of Expertise:

Signature Authentication Disguised Writing Altered Documents Ink and Paper Analysis Anonymous and Threatening Notes Wills Quit Claim Deeds Medical Malpractice Insurance Fraud

Medical Documents Titles Deeds Contracts  Checks Credit Applications Loan Applications Prenuptial Agreements Receipts Insurance Claims

Meyer participates in continuous training and annual proficiency testing from the Scientific Association of Forensic Examiners and the International Association of Document Examiners. Additionally, Meyer has published three articles in peer reviewed journals.

Mr. V C Misra is a leading Forensic Handwriting, Finger Print and Document Examiner with over 21 years of experience. He has solved and given opinion on thousands of cases in India, UK, USA, Canada, Japan, Australia, Germany, Italy, France, Russia, South Africa and UAE. Mr. Misra's Expertise Includes:

• Examination of Handwriting, Signatures, Fraudulent Additions and Alterations
• Approximate Age of Documents
• Photo Static and Scanned Transplantations of Signatures
• Traced, Freehand and Impersonation Forgeries
• Denial of Normal or Disguised (Changed) Signatures
• Anonymous Letters
• Body Writings on Account Opening Forms
• Denial of Withdrawal of Money
• Development of Latent Finger or Palm Prints from the Cheques
• Bank Documents by Ninhydrin (Chemical) Method Used for Impression Sweat on Paper
• Opinions on Folds
• Sequence of Strokes and Distinction Between Inks
• Insertion of Typed or Printed Matter
• Fake Currency Notes
• Credit Card Forgeries
• Identification of Computer Typed Documents
• Fake Seals and Rubber Stamps

Mr. Misra's Expert Opinion is Available in the Following Languages: English; French; German; Russian; Spanish; Hindi; Gujarati; Urdu; Marathi; Regional Languages of India or Abroad. Clients Include:

Air Force Police Bank of Tokyo Bechtel (India) Bennett & Coleman Birla Soft C.R.P.F. Delhi Police Delhi University Duncan Industries Electrolux I.C.I. Fertilizer IIT New Delhi & Kanpur

Industries & MNC's J & K Bank JNU New Delhi L.I.C. Main Detective Agencies Private Parties Punjab National Bank Skanska Standard Chartered Bank State Bank of India U.P. Financial Corporation U.P. Police

Principle Forensics is a national Media Forensics Laboratory. They Recover, Authenticate, Enhance, and Analyze all types of recorded evidence, including Video, Audio, and Digital Images. Principle Forensics backs all their work with experienced, highly trained, expert testimony.

Nick Barreiro, BAC, AVFA, DIVRT, Chief Forensic Analyst, is a Certified Audio Video Forensic Analyst and an FBI-trained member of the Digital Imaging and Video Recovery Team. During his 15-year law enforcement career, he was a patrol sergeant, technology project manager, media forensics expert, detective, digital evidence specialist, and patrol officer. Prior to his career in law enforcement, Mr. Barreiro was an audio engineer and producer in California. He also worked for KBMB radio in Sacramento and has extensive experience and training in audio enhancement and analysis.

Litigation Support - Mr. Barreiro works with attorneys representing plaintiffs and defendants in civil or criminal matters in which Audio, Video, or Image Evidence plays a key role. He has tremendous technical knowledge and training, but also extensive experience on the witness stand.

Mr. Barreiro has conducted hundreds of forensic audio, video, and image investigations in the United States and internationally. He has enhanced and analyzed thousands of digital files, ranging from simple slip-and-fall cases and minor traffic accidents to complex investigations such as homicides and officer-involved shootings. He has been court-certified as an expert and provided expert testimony in criminal cases and civil litigation in federal and state court. A highly trained and experienced forensic analyst, he provides technically detailed and precise results with expedited turnaround times.

Video, Audio, and Image Forensics

Evidence Recovery Authentication Enhancement Synchronization Analysis Redaction

Photogrammetry Facial Recognition License Plate Recognition Public / Media Release Court Exhibit Preparation

Mike Wakshull is a civil and criminal court-qualified document examiner who partners with legal clients to dissect the evidence presented in handwritten and computer-generated questioned documents. His valid approach often produces winning arguments during the trial. Wakshull applies his scientific training to examine questioned documents which is a court requirement. He uses generally accepted practices such as SWGDOC and ANSI/ASB standards. His laboratory is well-equipped with high powered digital microscopes, VSC80, ESDA, high quality digital scanners, and software. He has built a large forensic reference library. Wakshull is skilled at creating and explaining complex exhibits in easy-to-understand language and pictures. His courtroom approach is to teach and engage the trial participants—opposing attorney, judge and jury.

Mike Wakshull holds a graduate school certificate in Forensic Document Examination. Since 2010 Mr. Wakshull has worked and studied in the science and discipline of Document Examination and Handwriting Analysis. He is one of only a handful of forensic document examiners with graduate school training in the science of forensic document examination. His opinion is always based on sound fundamentals of evidence. Mr. Wakshull has spoken at International and local conferences and seminars and also holds professional certifications that bring unique skills to your case. As a Certified Quality Engineer, Mr. Wakshull studied the science of variability and applied this to the analysis of handwriting and documents. As a Certified Information Systems Auditor, he applies his knowledge of information systems and technology to the analysis of documents.

Q9 Consulting, Inc. Has both an extensive research library and laboratory. Q9 Consulting, Inc. serves Southern California counties of Riverside, San Diego, Orange, San Bernardino, and surrounding regions. Mike has worked cases from 29 states and five countries. Work is accepted from all other locations.

Areas of Expertise:

Contracts Wills (Printed and Holographic) Deeds Affidavits Employment Agreements Checks Insurance Claims Social Security Cards Anonymous Letters Crime Scene Writing

Notarized Writing Photographs Threatening Letters Graffiti Altered Documents Handwritten Notes Computer Generated Pages Medical Records Loan documents Robo signed documents

View Mike Wakshull's Consulting Profile.

Greg Litster has over 18 years of experience in the Banking Industry specializing in Check Fraud Prevention, High-Security Checks, and Expert Witness Services. With his vast knowledge and expertise in the area of fraud, garnered from his experience in developing safeguards against it, Mr. Litster is well-equipped to provide Expert Witness services to organizations and attorneys for both Plaintiff and Defense. He has been retained for matters including:

CHECK FRAUD - EMBEZZLEMENT - CYBER CRIME

Background: As a Senior Vice President and head of his bank’s Financial Services Division, Mr. Litster was charged with responding to a 1990s epidemic rise in fraudulent checks hitting his bank's corporate customers’ accounts. He established stronger internal controls and helped create fraud prevention products, including a completely new type of check called the SAFECheck. Mr. Litster organized the SAFEChecks Division within the bank and over the next three years, fraud losses and attempts dropped by 95%. 

Mr. Litster acquired the SAFEChecks Division from the bank in 1997. SAFEChecks continues to be America’s leader in check fraud prevention. SAFEChecks offers many styles of high security business and personal checks, Positive Pay software, secure check writing software, envelopes, toner, and pressure seal equipment. 

Expert Witness Case Samples:

• Deluxe Corporation v. St. Paul Fire and Marine Insurance Company;
• Experi-Metal, Inc. v. Comerica Bank;
• First National Bank of Colorado v. Robert W. Baird & Co.

View SAFEChecks Consulting Profile.

Robert Radley's practice is the longest established private independent laboratory in Great Britain dealing solely with the Forensic Examination of Handwriting and Documents. Mr. Radley is a trained forensic scientist specialising exclusively in this field. He has written numerous papers and publications in forensic science journals on forensic document examination relating to a variety of aspects of this work and has presented these to scientific meetings both in this country and abroad. He has been on the Editorial Board of the International Journal of Forensic Document Examiners.

Since 1971, Mr. Radley has been consulted in over 9,000 cases involving questioned documents with instructions received from all over the world. These generally relate to signature authentication and/or handwriting identification together with other areas of document examination which are dealt with on a routine basis, including non-destructive instrumental analysis of inks, paper, alterations, erasures, typewriting, printing, indented and electrostatic writing impressions in documents (ESDA), photocopy examinations, dating queries and determination of sequences of writings. He has trained as a Single Joint Expert and regularly deals with such cases. His laboratory is extensively equipped with the necessary instrumentation for the forensic examination of documents.

Mr. Radley has given evidence on several hundred occasions as an expert witness in the courts throughout the UK and also courts in Australia, New Zealand, Brunei, Hong Kong, Singapore, Malta, The Hague, The Republic of Ireland, Jersey, Cyprus, Germany, Switzerland, Kenya and Gibraltar.

USAForensic is a boutique state-of-the-art forensics company with full-time labs in Phoenix, Arizona and Detroit, Michigan. Our booking office is on the east coast. This helps with an earlier start each day and with overseas cases.

Specializing in forensic Audio, Video, Cell Phones, Computers Photography & ”Cell Tower tracking” debunking.  USAForensic is court certified in Federal, US Military, US District, many State and county courts throughout the United States. International cases are not uncommon. Mr. Neumeister has worked in 23 countries over the past 40 years.

Clients range from the largest Law firms to private firms, large corporations, the Department of Defense, government agencies, advocacy groups, the DOJ to the innocence project.

Technology is flying past the court system. We’re here to work with attorneys to understand how to deal with digital or analog evidence, how to challenge it or how to get it admitted into evidence.

We prefer to work in the background assisting attorneys, even writing out Daubert 702 & 902 issues regarding other parties evidence submissions.

In a recent Federal Daubert hearing USAForensic worked with DOD JAG attorneys to get police cell tower tracking ruled inadmissible. The federal judge rule police cell tower tracking as “Garbage in, Garbage out”. 

Not a verifiable science, not peer reviewed, no scientific white-paper to support its use.

Over 600 cases in the past 3 years. From the very highest profile to simple straightforward forensic cell phone extractions or video and audio clarification for court use.

To us Data is Data & takes no side, but it has to be verifiable data.