Not that we haven't seen mock-ups before for systems using webcams to intelligently move user interface elements, but it's another thing entirely for a company to make a public proclamation that it's tinkering with implementing something of the sort into a future build of its OS. Over at the Canonical design blog, one Christian Giordano has revealed that the company is in the early stages of creating new ways to interact with Ubuntu, primarily by using proximity and orientation sensors in order to have one's PC react bas