Summary: | Today multi-touch technology is the basis for many new techniques designed to improveinteractions with computers and mobile devices. It seems that multi-touch screen interfacemakes the user handling very natural in the sense that there is no need for a manual in how tointeract with the object on the screen.The aim with this paper is to establish a fundamental set of design principles intendedspecifically for large multi-touch interfaces. To reach this goal we have implemented a coupleof sub-goals beforehand:It was essential that we acquired a good understanding of the current state of the multi-touchinterface and the different implementations that exist today. To make this possible weconstructed a multi-touch display, "Rosie". Knowing how the hardware is produced today willhelp us understand the limitations and also the possibilities of the design implementationstoday and in the future.We also needed to devise a sound interaction design process that conveys the moderndesigners work. During this design process four methods were implemented that gave usdeeper understanding how to reach the result in this paper (design principles). The methodsare: Qualitative conceptualisation, Qualitative user-testing, Participatory design, and Iterativeprototyping. Doing these methods we gained knowledge through the process and experienceof for example, building, running workshops, doing video-prototypes and etc. Creative designwas very relevant in our design process.The result in this paper is a foundation for a set of design principles with relevance for multitouchinterfaces and a interesting design process for developing multi-touch applications.
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