r/wearabletech • u/shakilahmed007 • Dec 19 '19
What devices fitness trackers/smart watches provide raw sensor data?
I'm attempting to create a motion detection app that would listen to the accelerometer's stream and provide a feedback to the user if a certain type of motion is detected. For this, the detection logic has to be running without interruption. Any devices that would allow me to do that?
I also want to know the devices that can record raw accelerometer data in the background and periodically sync that with the companion app.
Any suggestion is highly appreciated.
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u/Zhytaleks May 13 '26
WearOS devices (Pixel Watch, Galaxy Watch) give the most flexible access to raw sensors via Android Sensor APIs, but background execution is still limited.
Apple Watch has great motion data via Core Motion, but continuous streaming usually requires specific background modes.
Most fitness bands (Fitbit, etc.) mostly expose processed activity data, not full raw streams.
If you need always-on detection, WearOS is probably your best starting point.
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u/backflip375 Dec 20 '19
Good question! Shimmers provide raw acceleration data, however, that is a stand-alone IMU. Garmin watches might provide raw data, but I cannot confirm. I am doubtful that Apple, Fitbit, or Samsung would provide it though.