Yes this is possible. Then I should turn the sound on again when the phone is moving? How can I do this?
Actually I added an exit task to put the sound back on and vibrate a little so I can check it is done. But I still miss some calls.
I don't think the phone was still silent when I take it and put it in my pocket. I really think that the accelerometer believes the phone is upside down. It would be interesting to know what "upside down" means for the accelerometer by the way...
This is WAY off topic... but, congratulations on applying the word 'semaphore' in a technologically modern context. That was good... didn't know it was possible but well done.