Businesses have tried many things over the years to keep their bathrooms secure: keys attached to large wooden or plastic items, keypads that require a code you can only get from a receipt, and even just the classic "restrooms are for customers only" sign. But you may start seeing a new type of bathroom door lock being used in San Francisco: a smartphone app.
Good2Go touts itself as "San Francisco's newest must-have app!" that is used to access "modern restrooms" in a variety of locations, such as coffee shops and grocery stores, throughout the city. It also advertises that you can "join the virtual queue" and "get notified when it's your turn."