椅子是生活中隨處可見的物品，一天使用椅子的時間也佔大多數。但往往 椅子只會提供使用者舒適的坐著，不會有任何額外的回饋。我們想設計一 張使 用者能輸入指令且會提供觸覺回饋的互動辦公椅。辦公椅藉由使用 者旋轉椅墊、 傾斜椅背或滾動輪子時調節阻力來限制使用者的運動。這 種互動方式理論上在 許多應用上是有效的，如沈浸在VR遊戲裡或是在公 共場所(如開會)可以快 速、有效地且私密的從椅子得知訊息。因為辦公室 是日常生活中隨處可見的物 品，因此想在辦公椅上設計不同阻力的觸覺 回饋，並探討在旋轉椅墊、傾斜椅 背及滾動輪子的可識別度。希望提出 的實驗結果以及一系列通過椅子的力回饋 來達到互動的創新技術。

We propose a new type of haptic output for foreground in- teractions on an interactive chair, where input is carried out explicitly in the foreground of the user’s consciousness. This type of force output restricts a user’s motion by modulating the resistive force when rotating a seat, tilting the backrest, or rolling the chair. These interactions are useful for many applications in a ubiquitous computing environment, rang- ing from immersive VR games to rapid and private query of information for people who are occupied with other tasks (e.g. in a meeting). We carefully designed and implemented our proposed haptic force output on a standard office chair and determined the recognizability of five force profiles for rotating, tilting, and rolling the chair. We present the result of our studies, as well as a set of novel interaction techniques enabled by this new force output for chairs.

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