SF, Google Launch Free Public Wi-Fi | News & Opinion | PCMag.com. 32 of San Francisco's public parks, plazas, and open spaces are getting free WiFi towers, courtesy of Google. After two years, the city will be responsible for the expenses; but, the individuals using the service will, of course, be responsible for their own security. As free WiFi becomes more readily available, users need to be aware that they should be using a VPN service to encrypt their traffic, and anonymize their location while online. I am pleased that the City of San Francisco has promised its citizens this service, and that it will not be collecting their data, or tracking them with it. Of course, you still can't drink a Big Gulp or eat a Kids Meal with your kid while you browse the web or watch Netflix.