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arXiv · 2101.01514

Janus: Efficient and Accurate Dual-radio Social Contact Detection

Timofei Istomin·Elia Leoni·Davide Molteni·Amy L. Murphy·Gian Pietro Picco·Maurizio Griva
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Abstract

Determining when two individuals are within close distance is key to contain a pandemic, e.g., to alert individuals in real-time and trace their social contacts. Common approaches rely on either Bluetooth Low Energy (BLE) or ultra-wideband (UWB) radios, that nonetheless strike opposite tradeoffs for energy efficiency vs. accuracy of distance estimates. Janus reconciles these dimensions with a dual-radio protocol enabling efficient and accurate social contact detection. Measurements show that Janus achieves weeks to months of autonomous operation, depending on the configuration. Several large-scale campaigns in real-world contexts confirm its reliability and practical usefulness in enabling insightful analysis of contact data.

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Timofei Istomin, Elia Leoni, Davide Molteni, Amy L. Murphy, Gian Pietro Picco, Maurizio Griva. 2021-01-05. Janus: Efficient and Accurate Dual-radio Social Contact Detection. https://arxiv.org/abs/2101.01514

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