Collective Interaction - Let's join forces

In this paper we introduce the concept of Collectiv e Interaction. Collective Interaction involves designing for co-exp riences among co-located people sharing collective resources for controlling terfaces. The particular approach we explore in this paper is to instrumenta lize collaboration, such that the interaction itself is a matter of collective ac tion. To illustrate this we provide an interaction model and a definition of Collective Interaction, and present two design cases based on this model, one in the contex t of a public library and one in a home-context. We outline design rationales, an d discuss experiences from trial use of the prototypes.