Digital Tabletop Input Device

Recent advances in digital tabletop touch-and-gesture-activated screens have allowed for small group collaboration. The newest generation screens simultaneously support multiple users, multiple contact points per user, and gesture recognition. Although the usefulness and potential of these devices has been demonstrated, a formal quantitative evaluation of their performance has not been performed to date. This paper investigates the performance characteristics of a front-projected, 1:1 perspective, touch interface in consideration of Fitts ’ law. Specifically, this study evaluates the Mitsubishi Electric Research Laboratories ’ (MERL) DiamondTouch digital tabletop. This paper explores the hypothesis that selection is faster and more accurate on horizontal digital tabletops compared to a mouse