@HeatherShaw - Yep, we have developed an entire platform around the BangleJS2 and various sensors for physiology, behaviour, etc. We just finished a 24h comparison study of the activity tracking to other wearables, and we have quite a bit of the logic already coded, with its own application for uploading data to our servers/cloud infrastructure.
We have a long term study ongoing right now throughout the summer to monitor people.
Let me know if you want to chat more. :)