ShadowTouch: a Multi-user Application Selection Interface for Interactive Public Displays

In order to make public displays more attractive, recent work has begun to explore the concept of multi-application systems that allow passers-by to interactively choose from a set of display applications. However, the use of traditional desktop approaches (e.g., menus or tiles) for choosing an application in such circumstances is limiting, in particular in multi-user setups where multiple passers-by can concurrently interact with different applications on different parts of the screen. In order to explore novel means of application control, we have developed and evaluated a multi-user application selection interface called ShadowTouch. ShadowTouch uses information from a depth-camera to present the available applications overlaid within the bounds of the users' on-screen silhouettes (i.e., their "shadow"). In this paper we present the design, development, and initial usability evaluation of ShadowTouch.

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