On site maintenance using a wearable computer system
CHI '95 Conference Companion on Human Factors in Computing Systems
Developing a context-aware electronic tourist guide: some issues and experiences
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Application Design for Wearable and Context-Aware Computers
IEEE Pervasive Computing
Winspect - A Case Study for Wearable Computing Supported Inspection Tasks
ISWC '01 Proceedings of the 5th IEEE International Symposium on Wearable Computers
MIA: A Wearable Computer for Bridge Inspectors
ISWC '98 Proceedings of the 2nd IEEE International Symposium on Wearable Computers
Preliminary Investigation of Wearable Computers for Task Guidance in Aircraft Inspection
ISWC '98 Proceedings of the 2nd IEEE International Symposium on Wearable Computers
Visual Contextual Awareness in Wearable Computing
ISWC '98 Proceedings of the 2nd IEEE International Symposium on Wearable Computers
Evaluating Contextual Information for Wearable Computing
ISWC '02 Proceedings of the 6th IEEE International Symposium on Wearable Computers
Using Physical Context for Just-in-Time Information Retrieval
IEEE Transactions on Computers
Wearable Systems in Nursing Home Care: Prototyping Experience
IEEE Pervasive Computing
Acceptance of augmented reality instructions in a real work setting
CHI '08 Extended Abstracts on Human Factors in Computing Systems
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We describe a systematic, quantitative study of the benefits using context recognition (specifically task tracking) for a wearable maintenance assistance system. A key objective of the work is to do the evaluation in an environment that is as close as possible to a real world setting. To this end, we use actual maintenance tasks on a complex piece of machinery at an industrial site. Subjects for our study are active Zeiss technicians who have an average of 10 years job experience. In a within subject Wizard of Oz study with the interaction modality as the independent variable we compare three interaction modalities: (1) paper based documentation (2) speech controlled head mounted display (HMD) documentation, and context assisted HMD documentation. The study shows that the paper documentation is 50% and the speech only controlled system 30% slower then context. The statistical significance of 99% and 95% respectively (one sided ANOVA test). We also present results of two questionnaires (custom design and standard NASA TLX) that show a clear majority of subjects considered context to be beneficial in one way or the other. At the same time, the questionnaires reveal a certain level of uneasiness with the new modality.