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Abstract: In this paper, we propose a novel interactivity design concept called environment user interface (EUI) and show a preliminary evidence of its efficacy. It is our conjecture that EUI, leveraging contextually appropriate environmental data, could enrich the interactivity between a user and technology. This enriched interaction concept could enhance human situational awareness and, thus, support decision making. To evaluate the potential efficacy of EUI, an auditory alert system delivering auditory cues based on the level of ambient noise was implemented and evaluated with and without a EUI component. Throughout a pilot study, preliminary evidence was obtained that incorporating environmental data into a human technology interaction in the area of auditory alert system provided better auditory cues and enhanced decision making.

(a) EUI for alert system(above)

(b) The overall concept of EUI (left)