What exactly do you mean by "possible"? There's no such functionality out of the box, of course. But it's possible to implement. Source code is open.
Okay. I guess I could use "ignition on/off" for when accellerometer is detecting movement or not ;-)
If the client is used for sports tracking, is it possible to use the accellerometer to detect and send an alert if the runner/rider (horse/bike) either has stopped moving (at all) for say 30 seconds, or have had a crash?