MacNN describes a new Apple patent filing which reveals that Apple has been working on displaying "visual information on the surface of a device, while using the same area or visual out display to act as an input device." Essentially, Apple describes the use of buttons which provide visual display on the button itself to provide dynamic information. While it could be used in any electronic device such as laptops, PDAs, cell phones, the application describes the possibility of its use in a "standalone device" such as a remote control. The goal of this technology would be to streamline the user interface for users. There have been previous unconfirmed rumors that Apple was working on incorporating "color LCD buttons" alongside the trackpad on Macbooks. A similar concept is used on the much publicized Optimus OLED keyboard.