Authentication is the process of substantiating that the video information in question is a complete and accurate representation of what it purports to be. A variety of techniques are used in conjunction, according to best practices, that allow the examiner to draw a scientific conclusion.
Authenticity examinations are often based on allegations of alteration, equipment misuse, chain of custody deficiencies and illegal monitoring techniques. It is often necessary for the contributor to supply specific information, media, software and equipment to properly conduct the examination.
During authenticity examinations, detailed work notes are prepared and a formal laboratory report is provided to the client at the end of the exam.