Sonar-based measurement of user presence and attention

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Sonar-based measurement of user presence and attention

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ACM International Conference Proceeding Series archive
Proceedings of the 11th international conference on Ubiquitous computing table of contents

Orlando, Florida, USA

SESSION: Notes table of contents

Pages 89-92

Year of Publication: 2009

ISBN:978-1-60558-431-7

Authors

Stephen P. Tarzia	Northwestern University, Evanston, IL, USA
Robert P. Dick	University of Michigan, Ann Arbor, MI, USA
Peter A. Dinda	Northwestern University, Evanston, IL, USA
Gokhan Memik	Northwestern University, Evanston, IL, USA

Sponsors

ACM: Association for Computing Machinery
SIGMOBILE: ACM Special Interest Group on Mobility of Systems, Users, Data and Computing
SIGCHI: ACM Special Interest Group on Computer-Human Interaction

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ACM New York, NY, USA

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ABSTRACT

We describe a technique to detect the presence of computer users. This technique relies on sonar using hardware that already exists on commodity laptop computers and other electronic devices. It leverages the fact that human bodies have a different effect on sound waves than air and other objects. We conducted a user study in which 20 volunteers used a computer equipped with our ultrasonic sonar software. Our results show that it is possible to detect the presence or absence of users with near perfect accuracy after only ten seconds of measurement. We find that this technique can differentiate varied user positions and actions, opening the possibility of future use in estimating attention level.

REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

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