There are various approaches to recognizing user actions for interactive arts. By making a system interactive, the audience has more fun because they are participating, and the artists can translate what is in their imagination more richly. Since user actions have great variety and the restrictions on installations are diverse, conventional systems use mechanisms for recognizing user motions that are specialized to their own work, i.e., that are not general. In this paper, we propose a method that adds interactivity to any surface and recognizes the position and intensity of a preformed action by using multiple accelerometers.