SurfacePhone: A Mobile Projection Device for Single- and Multiuser Everywhere Tabletop Interaction
Christian Winkler, Markus Löchtefeld, David Dobbelstein, Antonio Krüger, Enrico Rukzio · 2014
Figure 1: The evolution of the SurfacePhone design. Starting with design sketches (a, b) over concept prototypes for multi-user interaction (c) to a fully implemented phone case for iPhone5 that supports gesture tracking (d) and touch recognition (e) using the phone’s camera and accelerometer. To maintain a mobile form factor, the screen real estate of a mobile device canIn this paper we present SurfacePhone; a novel configuration of a projector phone which aligns the pro-jector to project onto a physical surface to allow tabletop-like interaction in a mobile setup. The projection is created behind the upright standing phone and is touch and gesture-enabled. Multiple projections can be merged to create shared spaces for multi-user collaboration. We investigate this new setup, starting with the concept that we evaluated with a concept prototype. Furthermore we present our technical prototype, a mobile phone case with integrated projector that allows for the aforementioned interaction. We discuss its technical re-quirements and evaluate the accuracy of interaction in a sec-ond user study. We conclude with lessons learned and design guidelines.