It is recommended that an expert witness arrive at the courtroom about fifteen minutes before court is scheduled to commence unless other arrangements have been made with the attorney. This…
Becoming Qualified as an Expert Witness for the First Time
Becoming qualified as an expert witness for the first time is a significant accomplishment for an expert. External validation by a judge launches the expert to the next level as…
Preparing for Trial: Meetings with Attorneys
Pre-trial meetings with the attorney who will be presenting the expert’s evidence in court are not a luxury. They are essential. Though it may be at times challenging to arrange,…
Expert Witnesses: The Need to Remain Current
Expert witnesses are professionally and ethically obligated to remain current in their field of expertise. Parties who retain experts and the courts that rely upon their testimony are entitled to…
What Should be in an Expert Report?
The culmination of an expert’s work is the expert report. The expert report represents the final written product of the expert and serves a number of important purposes. First, it…
Social Media Images: Authentication Challenges
The widespread use of handheld cameras and the penchant for posting video to social media have created significant evidentiary challenges from an authentication perspective. For example, cameras mounted on motorcycles…
Using Digital Signatures to Authenticate Video Images
Watermarks were discussed in an earlier post as a method of authenticating video images or showing that image alteration has occurred. Watermarks come with limitations. A more commonly used method…
Using Watermarks to Authenticate Video Images
Another method of authenticating video images is to show scientifically that an image has not been altered or conversely that alteration has occurred. One such method has been the use…
Authentication and the Use of Audit Trails
In order for video evidence to be admitted at trial, the tendering party must prove that the images are authentic. There are a number of technical approaches that are available…
Authenticating Monitor Photographs
The proper method of presenting surveillance video evidence at trial is to show all relevant authenticated images that have been exported from the DVR or server. Occasionally, the only evidence…
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