> They are not meant to. I know, that's my whole point. They aren't medical devices and aren't useful for medicine/healthcare beyond showing that you are or ar

> They are not meant to. I know, that's my whole point. They aren't medical devices and aren't useful for medicine/healthcare beyond showing that you are or are not active. > What are you basing this on ? Anecdotally, I and a few of my friends who are fully into Fitbit are wearing them dutifully Optical blood flow sensors need to be held flat against your skin with minimal movement up and down the arm. That's just hard to do. > It's not meant to be a short-term diagnostics tool Again, that's exactly what I was saying. My only claim was that the "health" data they produce isn't useful for healthcare in a clinical setting. This is the reason health record systems don't import that data. I worked in the medical record space for quite a bit of time, and never met a doctor that wanted this kind of data in a medical record.