In recent years, museums have seen their exhibitions become more interactive, with more and more devices engaging visitors in mediation rather than offering them a passive visit. However, interactive museum installations (IMI) have given rise to challenges in their design, with the need to assert a co-design approach and to structure creativity. To meet these challenges, we present a method based on capitalizing existing mediation practices, to analyze and characterize IMI along three axes: intentions to mediate, experiences on offer and interaction technologies. In order to put the proposed method into practice, an associated exploration tool was developed with the aim of improving the upstream phases of IMI design. This tool was evaluated through an exploratory pilot study, implemented in a workshop held as part of a concrete mediation project, thus enabling its contribution in terms of exploration to be quantified. The results suggest that the method and its tool supported users in exploring the mediation opportunities offered by IMI, with the tool-assisted ideation phase showing a trend towards higher originality and greater variety among the ideas produced.
