Celesq® Programs

Little Known Facts About Handwriting Authentication

Program Number
Program Date
CLE Credits

Much work performed by forensic document examiners is authentication of handwriting. Most of this work is authentication of signatures. Advances in computer software has increased the accuracy of the results. This work often requires skill in matching patterns of writing. The underlying basis for handwriting comparison is learning the different ways a person writes across writing sessions. The forensic document examiner uses tools such as microscopes to examine the writing in question to find small details that a simulator will not discover. The document examiner learns whether the questioned writing fits within the patterns observed in the person's known writing. 

This seminar uses case studies to illustrate methods of authentication. Cases include the Zodiac Killer and the 2018 Zahau v. Shacknai case that resolved whether Rebecca Zahau was murdered or committed suicide at the Spreckels Mansion on Coronado Island. 

Topics covered are: 

  • Handwriting identification techniques
  • The 21 attributes of handwriting examined by forensic document examiners
  • When are various tools used to examine handwritten documents?
  • What are generally accepted methods of examining handwritten documents?
  • What is the basis of handwriting comparison?
  • What is the difference between simulated writing and disguised writing? 

After this seminar you will have knowledge to: 

  • Look for disparities in handwriting and signatures among documents
  • Know when you need a forensic document examiner to partner on a case
  • Implement methods to obtain a sufficient number of contemporaneous exemplars Develop questions to ask a potential forensic document examiner
  • Write questions to cross examine a forensic document examiner

Available in States

  • California
  • Colorado
  • Florida
  • Georgia
  • New Jersey
  • New York
  • Texas Self Study

Program Categories

  • Computer, Internet & E-Commerce Law
  • Federal Courts
  • Florida Eligible
  • Forensic
  • Trial Skills


  • Areas of Professional Practice : 1 Credit