Cal. Elec. Code § 14216

Any person desiring to vote shall announce his or her name and address in an audible tone of voice, and when one of the precinct officers finds the name in the index, the officer shall in a like manner repeat the name and address. The voter shall then write his or her name and residence address or, if the voter is unable to write, shall have the name and residence address written by another person on a roster of voters provided for that purpose, whereupon a challenge may be interposed as provided in this article.