The wearable computer that can understand the context of human life and communicate autonomously with various electronic media in a ubiquitous computing environment would be very useful as an assistant for humans. In this paper, we present a wearable computer that interacts with both humans and electronic media. The developed wearable computer can sense the interactive electronic media that a user wants to use and also communicate with it. Utilizing these interaction capabilities, it intermediates between each media and the user and offers a friendlier interface to the user who wears this system. We also show some scenarios and applications of the development system. Key words: wearable computers, human computer interaction, interactive electronic media, environment sensing, assistance system