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. 2022 Nov 4;22(21):8486. doi: 10.3390/s22218486

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Wi-Fi-based sensing can be used for remote monitoring of human activities during COVID-19 pandemics, such as respiratory dynamics. Three layers summarize the working process of the Wi-COVID from the bottom to the top of the image. First, a Wi-Fi sensing, like Raspberry PI, records the respiratory signal, then, in the processing phase the respiratory parameters are obtained using the Cloud and finally real-time streamed with alerts. (Reproduced under the terms and conditions of the Creative Commons Attribution (CC BY) license from [173,174]).