Evidence in a Georgia car crash trial must be authenticated before it can be admitted, which means showing that the item is what its proponent claims it to be. O.C.G.A. § 24-9-901 sets this requirement as a condition of admissibility.
What authentication requires
The standard is satisfied by evidence sufficient to support a finding that the matter in question is genuine. This is a relatively low threshold: the proponent does not have to prove authenticity beyond doubt, only enough that a reasonable jury could find the item is what it is claimed to be. The most common method is testimony from a witness with knowledge, such as the person who took a photograph confirming it fairly depicts the scene, or a records custodian identifying a document.
Different types of evidence
Photographs, video, text messages, and social media each require a foundation showing they are accurate and attributable to their apparent source. Digital evidence can be authenticated through testimony, distinctive characteristics, or supporting data about how it was created. Certain records are self-authenticating under a related provision and do not need extrinsic proof, such as properly certified public records. Once an item is authenticated, any remaining doubts about its reliability go to the weight the jury gives it rather than to whether it is admitted. For physical evidence, a chain of custody showing how an item was handled supports authentication. Authentication is also distinct from other objections, since an item can be genuine yet still be excluded as hearsay or as irrelevant.
Authentication functions as a gatekeeping step, ensuring the jury considers only evidence that has been shown to be genuine.