In this paper, we report on interaction techniques for very large displays such as interactive walls. Since display space is a crucial aspect for most visually-oriented tasks, we developed an interactive wall with an active area of 4.5 meters width, 1.1 meters hight, and with 3072x768 pixels. At this wall, three users are able to work simultaneously on separate areas using pen, finger, and hand gestures. They can shuffle display objects around, throw them to other users standing at the opposite side of the wall, they can take objects from the wall and put them back at another location without explicit mode change.

in: CHI’98, April 1998