Products are only able to satisfy, if they can be operated self-explaining, clearly structured and barrier-free. We look at the development of a product and its grafic user interface as an integrated process right from the start. This leads to a symbiosis between interface and the actual product in terms of an aesthetic design corresponding with an understandable user gudiance. Based on your specifications we develop concepts that succeed: As well in regard to the grafic appearance as in menu structure and technical realization.