> The phone's accelerometers will still run in aeroplane mode which can infer a surprising amount about your location. I've heard of most of these but this one

> The phone's accelerometers will still run in aeroplane mode which can infer a surprising amount about your location. I've heard of most of these but this one is new. How does this work? Are the accelerometers used to basically track direction and distance from a last known location?