(b) EXAMPLES. The following are examples only — not a complete list — of evidence that satisfies the requirement:
(2) Nonexpert Opinion About Handwriting. A nonexpert’s opinion that handwriting is genuine, based on a familiarity with it that was not acquired for the current litigation.
(3) Comparison by an Expert Witness or the Trier of Fact. A comparison with an authenticated specimen by an expert witness or the trier of fact.
(4) Distinctive Characteristics and the Like. The appearance, contents, substance, internal patterns, or other distinctive characteristics of the item, taken together with all the circumstances.
(5) Opinion About a Voice. An opinion identifying a person’s voice — whether heard firsthand or through mechanical or electronic transmission or recording — based on hearing the voice at any time under circumstances that connect it with the alleged speaker.
(6) Evidence About a Telephone Conversation. For a telephone conversation, evidence that a call was made to the number assigned at the time to:
(B) a particular business, if the call was made to a business and the call related to business reasonably transacted over the telephone.
(B) a purported public record or statement is from the office where items of this kind are kept.
(B) was in a place where, if authentic, it would likely be; and
(C) is at least 20 years old when offered.
(10) Methods Provided by a Statute or Rule. Any method of authentication or identification allowed by a federal statute or a rule prescribed by the Supreme Court.
US Supreme Court // ©
(As amended Apr. 26, 2011, eff. Dec. 1, 2011.)


