There's not one California system. Each jurisdiction inside California picks its own system out of those which are certified. https://www.sos.ca.gov/elections/

There's not one California system. Each jurisdiction inside California picks its own system out of those which are certified. https://www.sos.ca.gov/elections/ovsta/frequently-requested-information/voting-systems-used-counties/how-use-your-countys-voting-system https://www.sos.ca.gov/elections/ovsta/frequently-requested-... For example, LA uses Ballot Marking Devices.