To capture the "general presence level" in the labs we build a video-based movement detection system. For getting input about the "mood level" we use an explicit interface ("mood buttons"). We employed a third sensing system, Identec ICard and IPort (extended RFID technology) to get information about who is in the lounge. To enable communication between devices across companies firewall we extended the communication infrastructure for SIAM (KQML-embedded XML-Messages). The extended SIAM messaging infrastructure results in a system in which C++, Java and C# components are easily connectable.
