Contact Us. Registrar of Voters. 925-335-7800. The signer must bring valid form of ID (State DL, State ID Card, US Passport).If you are unsure if your ID is acceptable, don't hesitate to call us and ask. If you're in California and need to notarize a document, this stepbystep guide will walk you through the process. The notary is required to administer, sign and stamp the bottom portion of both oath documents. Once complete, send your original notary bond. If you mean certify a copy of the driver's license, the answer is no. California has some of the most rigorous requirements for becoming a Notary. The Notary Public Handbook is designed to supplement your course of study, which will prepare you for the notary public examination.