Multi-device interaction for spreadsheet on tablets

Multitouch interaction with spreadsheets on mobile devices raises multiple interaction issues. In this paper, we present the design and evaluation of novel interaction techniques for spreadsheet based on the stacking paradigm, which consists in laying one edge/face/corner of a smartphone on a tablet screen. We first explore the available gestures and degrees of freedom of our prototype to delimitate the possible interaction's vocabulary. Then, we propose novel interaction techniques to perform range selection in a spreadsheet on a tablet. To detect the smartphone on the tablet screen, we conceive a conductive smartphone copper-shell. We evaluate our prototype against the regular tactile interactions provided by spreadsheet apps. Our studies reveal that some of our interaction techniques perform between 15% and 20% faster for range selection.