As pervasive computing is developed, a user’s context information is used in a system to provide intelligent service to the user. Context is defined as information that characterizes the situation of an entity under a certain system environment. In this paper, we classify the context in a system into three types of context: user context, device context, and proximity context, which is context
information between user and device. We designed HIML (Human Interaction Markup Language) for the expression of the proposed contexts, and the middleware performed on various platforms including NUI/NUX (Natural User Interface/ Natural User eXperience) platform and interacted between appliances and sensors using HIML. We showed its function by experiments.

*ITRC 기여율 = 1