Does not work for me. Disabled shortcutd (which was using proximity sensor) but still didn't work. If one keeps camera lens cover open all the time (mine is and cannot shut it down), will the program work?
Also tried to manually start lfocus.py on xterminal (sudo ...). Starts, but when camera button is pressed and camera application comes in front, I still cannot see anything which would tell there is some extra (lfocus).