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Authentication
Authentication is the process of proving that a piece of evidence—like a document, photo, or email—is genuinely what you claim it is, and not a fake or a forgery.
What it actually is
In a court case, authentication is a procedural step where the party offering evidence must show enough proof that the item is authentic before the judge will let the jury consider it. This usually happens through witness testimony, distinctive characteristics of the item, or other circumstantial evidence. The requirement applies to all types of evidence, from contracts and letters to digital records and surveillance footage.
Why it matters in your case
If you cannot properly authenticate a key piece of evidence, the judge may exclude it entirely, which could severely weaken your case. Conversely, if the other side fails to authenticate their evidence, you can object and potentially keep damaging material out of the record.
The common misunderstanding
Many people confuse authentication with the truthfulness of the evidence’s content—authentication only verifies that the item is what it appears to be, not that its statements are accurate or reliable. For example, a signed contract can be authenticated as the actual contract signed by the parties, even if its terms are later disputed.
Get the actual rule
Definitions are orientation; rules are authority
This page explains the concept. When it matters to your case, read the rule that governs it in your court — we hold Texas, federal and Washington court rules word for word, and every state's official resources are on the state pages. If someone cites a case at you, check that it exists first.
Related
Terms that travel with this one
General explanation, not legal advice, and not specific to any state — procedures and deadlines vary by jurisdiction and court. If you can get a lawyer or free legal aid, do: every real option.