On achieving dependability for wearable computing by device bypassing

When using wearable computers used for medical operation and aviation safety, disrupted information presentation due to hardware/software problems can have serious consequences including medical accidents. We propose a mechanism that maintains information presentation in such situatoins by I/O device bypassing. In out method, I/O devices directly communicate with other devices if a system failure happens. The proposed method selects appropriate data converters by considering recognizability in order to present information that is easily understandable to users. We confirmed that the proposed method works effectively by implementing several applications with our prototype system.