Summarized this feature includes the following changes/additions: - make 'deviceorientation' relative by default -- now compatible with Safari on iOS, -- better usability (no drift) for VR applications, -- not reliant on magnetometer hence no interference in the presence of magnetic fields. - add dedicated 'deviceorientationabsolute' event for AR applications.
Docs: https://developers.google.com/web/updates/2016/03/device-orientation-changes https://goo.gl/4TD4xV https://docs.google.com/document/d/1NaXxW5zxB9-RamaL9jx3e_msao-GGrvTnfXJpusWf84/edit# https://github.com/w3c/deviceorientation/issues/21
Samples: https://timvolodine.github.io/deviceorientation-test/ http://jsbin.com/device-inertial-sensor-diagnostics