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InPhysible: Camouflage Against Video-Based Physiological Measurement

Abstract : Imaging photoplethysmography (iPPG) is a powerful set of methods for measuring physiological signals from video. Recent advances have shown that a low-cost webcam can be used to measure heart rate, blood flow, respiration, blood oxygen levels and stress. While these methods have many beneficial applications, the unobtrusive and ubiquitous nature of the sensors risk exposing people to unwanted measurement. We present InPhysible the first camouflage system against video-based physiological measurement. The infra-red system can be embedded into any pair of glasses, or other headwear, and disrupts the measurement of the iPPG signal while being imperceptible by the human eye. Our system is flexible and can simulate realistic pulse signals to hinder heart rate measurement. In this paper we present the design of our prototype and a user study validating its efficacy. Finally, we discuss the limitations and implications for data privacy and security.
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Daniel Mcduff, Christophe Hurter. InPhysible: Camouflage Against Video-Based Physiological Measurement. EMBC 2018, 40th International Engineering in Medicine and Biology Conference, Jul 2018, Honolulu, United States. pp.5784-5789, ⟨10.1109/EMBC.2018.8513662⟩. ⟨hal-02917102⟩

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