San Francisco lights up public WiFi 3.1 miles down Market St

San Francisco is slowly lacing its streets with public WiFi, with the latest hotspot covering a 3.1 mile strip running down well-trafficked Market Street as the geek hub tries to keep its residents online. The free service follows Google's installation of public WiFi at city parks, and is being supplied by Ruckus Wireless and Layer42 in partnership on outdoor hardware and backhaul.