This could be used for reach detection. Like as if you are reaching towards your mobile device. Pitch would increase. Or it could be used for detection that y

This could be used for reach detection. Like as if you are reaching towards your mobile device. Pitch would increase. Or it could be used for detection that you are showing the device to another person, the pitch would fall. And then it would rise. And if you had gyroscope data, then you would see a radical movement in the middle.