The eNTERFACE workshops aim at establishing a tradition of collaborative, localized research and development work by gathering, in a single place, a team of leading professionals in multimodal human-machine interfaces together with students (both graduate and undergraduate), to work on a prespecified list of challenges, for 4 complete weeks. In this respect, it is an innovative and intensive collaboration scheme, designed to allow researchers to integrate their software tools, deploy demonstrators, collect novel databases, and work side by side with a great number of experts. It brings together 80 researchers for a whole month, subsequently it is the largest workshop on multimodal interfaces.