“…However, it is unclear if any of the observed effects apply to interactive multi-touch exhibits, which may facilitate different forms of group engagement. Previous HCI research has studied group engagement around interactive tabletops in general [1,13,18,27,28,29,30,31,33,35,36,37] and in museums in particular [14,15,16,25,31]. This includes understanding which gestures are used, how visitors approach surfaces in public spaces, transitions between user groups, and physical and verbal interaction between users [13,14,16,18,30].…”