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. 2021 Jul 7;77(1-2):33–45. doi: 10.1007/s12243-021-00868-6

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© Institut Mines-Télécom and Springer Nature Switzerland AG 2021

This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.

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Fig. 9 — eHealthChain client application screenshots. a Doctor/patient registration. b Consent for accessing sensor data. c OAuth2.0 request for accessing Google Fit data. d Vital signs dashboard. e Step counts overview. f Request for doctor.