The artefacts in our rooms are increasingly digital and networked. Here is good concept for how a flexible and natural interface could be designed for interacting with all your hardware, software and services.
The room is first scanned by a pattern-recognition camera (similar to Microsoft Kinect) and the image is projected on a coffee table. Since the camera can both track your fingers, their movement and their target, you become able to interact with your networked hardware directly from the table. Smart and much cheaper than the original Microsoft Surface approach below.