Originally&sbquo "navigation" was used in respect to sailing and flying. It represents techniques and specific devices to measure the present position and the direction and distance to the destination while traveling&sbquo and even sees the entire operational situation as a system. Today&sbquo the device that most suits this meaning in our daily lives is the car navigation system. In short&sbquo it's possible to say michi-annai (giving directions) is a clear instance of navigation&sbquo and see guiding systems as navigation. It is possible to use "navigation" for systems and devices that measure the relationship between position and destination&sbquo recognize it and display it spatially and temporally. Today&sbquo owing to computer technologies&sbquo navigation has become increasingly interactive in terms of measurement and display&sbquo and it has become possible to deploy its guiding system not only in temporal and spatial terms but even in relation to our physical senses and mentality. A secretary-like assistance system called the knowledge navigator&sbquo for example&sbquo as the ultimate system for the PC&sbquo was designed and proposed as a symbol of navigation. Car navigation systems are already being asked to provide interaction between the traffic system and the driver or the driver's mental state in addition to driving directions. Such interaction is a clear-cut design theme as a realistic and potential example of navigation. What is particularly important in navigation is the relationship between the visual&sbquo audio and tactile interface and the navigation system. A navigation system with a new type of user interface that surpasses the graphic user interface (GUI) has already been proposed in design as an everyday "guiding assistance system." It is thought to indicate a general design objective for a navigation system with an interface and interaction&sbquo and would be the ideal in cognitive guidance in relation to human knowledge and sensitivity.