Abstract. In this paper we propose a novel wearable interface called "ActiveBelt" that enables users to obtain multiple directional information with the tactile sense. Since the information provided by the tactile sense is relatively unobtrusive, it is suited for daily use in mobile environments. However, many existing systems don't transmit complex information via the tactile sense. Most of them send only simple signals, such as vibration in cellular phones. ActiveBelt is a novel belt-type wearable tactile display that can transmit directional information. We have developed prototype systems and applications, evaluated system performance and usability, and demonstrated the possibility of practical use.

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We present a sensor-doll capable of music expression as a sympathetic communication device. The doll is equipped with a computer and various sensors such as a camera, microphone, accelerometer, and touch-sensitive sensors to recognize its own situation and the activities of the user. The doll has its own internal "mind" states reflecting different situated contexts. The user's multi-modal interaction with the passive doll is translated into musical expressions that depend on the state of mind of the doll.

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