PolygamousRanchKid writes "Android has become the top smartphone operating system in the United States, but Google's ambitions for it go well beyond tablet computers and smartphones, even beyond the mobile Web. Now Google says Android can also become the first mass-market bridge between the virtual world and the physical world, allowing smartphone apps to control light bulbs and home medical devices. Hoping to spark a wave of creativity similar to what Apple started when it opened the iPhone app store, Google distributed hundreds of circuitry kits to developers at last month's I/O conference. The Android Open Accessory Development Kit (ADK) allows Android's software to operate and communicate with motors, sensors, controllers and relays, allowing developers to create an interface in which a smartphone app could control or collect data from a thermostat, a lawn irrigation system or a group of lighting fixtures. 'The opportunity exists to dramatically change how you control your home,' said Tom Benton of Lighting Science. Over time, 'we're talking about the elimination of the wall switch.'"