The [iOS Compass app](https://apps.apple.com/us/app/compass/id1174136875) that is installed per default on iOS devices reports the altitude. Android exposes the [air pressure](https://developer.android.com/reference/android/hardware/Sensor#TYPE_PRESSURE), which can be used to calculate the altitude. -- GitHub Notification of comment by tomayac Please view or discuss this issue at https://github.com/w3c/geolocation-sensor/issues/43#issuecomment-604911855 using your GitHub accountReceived on Friday, 27 March 2020 09:53:15 UTC
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