Abstract
In this poster we illustrate the interaction design of a mobile system that facilitates group decision making by allowing group members to be engaged in a discussion which is actively supported by recommendation functions and explanations. The interactions between the users and the system are monitored in order to proactively offer appropriate directions and suggestions. Unlike many state of the art group recommenders, which solely mediates users' preferences and suggest items that are likely to be acceptable by all the group members, our system acts as a facilitator that guides and helps the group members in coming up with an agreement and a final decision.