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Re: [magnetometer] Provide API to access uncalibrated magnetometer values

From: Rijubrata Bhaumik via GitHub <sysbot+gh@w3.org>
Date: Tue, 16 May 2017 13:04:42 +0000
To: public-device-apis-log@w3.org
Message-ID: <issue_comment.created-301775614-1494939880-sysbot+gh@w3.org>
@anssiko : PTAL. 
Classify the magnetometer use cases into 2 buckets: 
- Use cases that require uncalibrated magnetometer
- Use cases that require magnetometer

The first 3 use cases in https://w3c.github.io/magnetometer/#usecases-and-requirements will benefit from Uncalibrated Magnetometer while the last 3 would need magnetometer.

In my view, 

- Metal(magnet) detection/ magnetic input / gesture recognition use cases in general will benefit from Uncalibrated Magnetometer reading. With uncalibrated magnetometer readings, there is no fear of calibration events (depending on platform and|or sensor manufacturer, can happen anytime nondeterministically) and because of that, we can reliably detect long presses and double clicks or identify presence of magnetized object in 3D space in relation to the device.

- Orientation/ Navigation (indoor)/ Compass heading can be achieved using (calibrated) Magnetometer readings.




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Received on Tuesday, 16 May 2017 13:04:49 UTC

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