Traditional graphical user interfaces (GUIs) are mainly designed for a single display and a set of single input devices. However, when we simultaneously use many and different types of computers (and electronic devices), such interfaces would often failed to work. As we can combine several physical devices to perform a task in a real world, we consider that it should also be possible to dynamically combine multiple digital devices. We named such concept "multiple computer user interfaces"

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... ). This video demonstrates several examples of MCUIs in personal and collaborative environments, including Pick-and-Drop, a digital whiteboard system with palmtop computers, and a digital table that can recognize objects placed on it.