BibTeX for papers by David Kotz; for complete/updated list see https://www.cs.dartmouth.edu/~kotz/research/papers.html @InProceedings{cornelius:same-body, author = {Cory Cornelius and David Kotz}, title = {{Recognizing whether sensors are on the same body}}, booktitle = {{Proceedings of the International Conference on Pervasive Computing (Pervasive)}}, series = {Lecture Notes in Computer Science}, year = 2011, month = {June}, volume = 6696, pages = {332--349}, publisher = {Springer-Verlag}, copyright = {Springer-Verlag}, DOI = {10.1007/978-3-642-21726-5_21}, URL = {https://www.cs.dartmouth.edu/~kotz/research/cornelius-same-body/index.html}, abstract = {As personal health sensors become ubiquitous, we also expect them to become interoperable. That is, instead of closed, end-to-end personal health sensing systems, we envision standardized sensors wirelessly communicating their data to a device many people already carry today, the cellphone. In an open personal health sensing system, users will be able to seamlessly pair off-the-shelf sensors with their cellphone and expect the system to \emph{just work}. However, this ubiquity of sensors creates the potential for users to accidentally wear sensors that are not necessarily paired with their own cellphone. A husband, for example, might mistakenly wear a heart-rate sensor that is actually paired with his wife's cellphone. As long as the heart-rate sensor is within communication range, the wife's cellphone will be receiving heart-rate data about her husband, data that is incorrectly entered into her own health record. \par We provide a method to probabilistically detect this situation. Because accelerometers are relatively cheap and require little power, we imagine that the cellphone and each sensor will have a companion accelerometer embedded with the sensor itself. We extract standard features from these companion accelerometers, and use a pair-wise statistic -- coherence, a measurement of how well two signals are related in the frequency domain -- to determine how well features correlate for different locations on the body. We then use these feature coherences to train a classifier to recognize whether a pair of sensors -- or a sensor and a cellphone -- are on the same body. We evaluate our method over a dataset of several individuals walking around with sensors in various positions on their body and experimentally show that our method is capable of achieving an accuracies over 80\%.}, }