In one example, a zoom in command is generated and transmitted when the camera based device 115 is moved along {TAIL ~ the axis}, towards {HEAD ~ the display device} 105 
In one example , a zoom in command is generated and transmitted when the camera based device 115 is moved along { TAIL ~ the axis } , towards { HEAD ~ the display device } 105
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH