Yesterday I paid my first visit to Slovenia's capital Ljubljana[GP:Ljubljana] to attend the "Interaktivni festival IF 2006" and to give a talk on the AOL Phone Box. Vuk ?osi?, whom I had met at the euroGel 2006, had asked me whether I wanted to deliver the talk and share some insights and information on a successful interaction design project, and I had decided to use the AOL Phone Box as an example. The AOL Phone Box is an ADSL 2+ modem with built-in Voice-over-IP (VoIP) functionality. It's based on a hardware platform from our hardware partner Sphairon; we have done the interaction design for the configuration Web Interface, the CD-based connection assistant and the built-in setup assistant. I'll go into more detail on this nice project in a later post. Vuk had asked me to prepare a 30-minute talk and be open to q&a for another fifteen minutes. I happily obliged, and we had a great session with lots of questions from the audience as to the design methodology, our usability evaluation methods, and metrics we would be using to determine the (economic) success level of the product. I feel grateful and deeply honored to have been invited to give this lecture, and I enjoyed my stay in beautiful Ljubljana with lots of highly motivated Internet professionals.