When preparing for an appointment with the California Department of Motor Vehicles, individuals generally need to provide specific forms of identification depending on the type of service being requested. For a driver's license or identification card application, a person typically needs to present either a valid U.S. passport, a California driver's license, or another form of government-issued identification that includes their photograph. Additionally, proof of residency in California, such as a utility bill or lease agreement, may be required. For individuals applying for a new license or making changes to their current one, it is also advisable to bring documents that show their Social Security number. For the most accurate and updated information, individuals should consult the relevant page on the California DMV website, where they can find comprehensive details regarding required identification for various services.