Use In Context: Between adaptivity and adaptation in context-based interactions

Context-based systems slowly emerge from research settings to usage practice. Consequently, next to questions dealing with the technological feasibility, questions dealing with the manageability and transparency of context-based services from a user perspective come to the fore. In particular, ubiquitous computing applications help bridging between virtual and real-world context dimensions (with regard to both, virtual and real context sensors and virtual and real context actuators). The resulting system often remains intransparent to its users, it is not immediately accessible recurring on conventionalized behavioural practices.