Comment by jph

Devices sending data that is anonymized, encrypted, and signed by the device is a must-have for some medical studies.

For example, imagine a medical study that looks at heart rate variability versus an intervention. The data analysts won't need to know each patient's name or email address, but will need to know each patient's heart rate variability when you're having the intervention. The study may span many physical locations, such as at multiple medical providers across a country.