San Francisco has taken a tentative step toward deciding on whether it will become the first local government in the country to run its voting machines on open-source software. The notion of shifting away from using proprietary technology sold by private companies to computer code made freely available for anyone to use and modify has been talked about for years. But it's been getting more attention since the city allocated $300,000 to study the issue. Proponents of open-source voting systems say local governments using them would be able to hold elections with an unprecedented level of control, transparency and security. California Secretary of State Alex Padilla has said he would support an open-source voting system, assuming it could pass the state's certification protocols. Open-source software could allow the city to more fully understand and adjust how votes are tallied. Currently, vendors of electronic voting equipment provide few details about how their machines operate, claiming those details are proprietary. Governments are also beholden to private vendors if they want to make a change to the software running the machines.