A core challenge in tabletop research is to support transitions between individual activities and team work. Shape-changing tabletops open up new opportunities for addressing this challenge. However, interaction design for shape-changing furniture is in its early stages - so far, research has mainly focused on triggering shape-changes, and less on the actual interface transitions. We present KirigamiTable - a novel actuated shape-changing tabletop for supporting transitions in collaborative work. Our work builds on the concept of Proxemic Transitions, considering the dynamic interplay between social interactions, interactive technologies and furniture. With KirigamiTable, we demonstrate the potential of interactions for proxemic transitions that combine transformation of shape and digital contents. We highlight challenges for shape-changing tabletops: initiating shape and content transformations, cooperative control, and anticipating shape-change. To address these challenges, we propose a set of novel interaction techniques, including shape-first and content-first interaction, cooperative gestures, and physical and digital preview of shape-changes.
The ACM CHI Conference on Human Factors in Computing Systems (https://chi2020.acm.org/)