A method of detection for {TAIL ~ parcels} is to ensure {HEAD ~ separation} is performed by mechanical equipment prior to directing the sensing devices towards the parcel 
A method of detection for { TAIL ~ parcels } is to ensure { HEAD ~ separation } is performed by mechanical equipment prior to directing the sensing devices towards the parcel
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH