Cal. Evidence Code § 1401 : California Evidence Code — Writings — Authentication And Proof Of Writings — Requirement Of Authentication — Prerequisite to admission Date: 31 Aug 2016 TEXT PDF Current through the 2016 Legislative Session (a) Authentication of a writing is required before it may be received in evidence. (b) Authentication of a writing is required before secondary evidence of its content may be received in evidence. Ca. Evid. Code § 1401