BLE API to detect nearby tags and send the nearest tag ID.

[NouranFlaifel]

Hi there! We are currently working on creating a health care application for the elderly, where we could track their indoor position at all time. To implement this Indoor Positioning System, we thought of having multiple BLE Tags, one in each room and using the new fitbit sense we could detect which of these tags is our patient closest to. We are asking if there is a BLE API that could detect the nearest BLE devices (in our case the tags) and send its ID to our Application Web API in realtime. If not, do you have any alternative solution to how to implement such system using the fitbit sense?

[Gondwana · Accepted solution]

Fitbit OS currently doesn't have a BLE API. This has been requested several times.

GPS is about your only chance, and that will be iffy inside. Communicating anything from the watch will require the 'companion device' (ie, user's phone) to be nearby, so you might as well implement everything on the phone.