sensing, by the mobile device at least one of a movement of the captured entity and {HEAD ~ a change} of size of the captured entity according to {TAIL ~ a movement} of the mobile device 
according to
sensing , by the mobile device at least one of a movement of the captured entity and { HEAD ~ a change } of size of the captured entity according to { TAIL ~ a movement } of the mobile device
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH