{HEAD ~ A system} for collaborative bar code error detection and correction comprises a network of individual scanning entities for {TAIL ~ scanning bar coded labels} 
{ HEAD ~ A system } for collaborative bar code error detection and correction comprises a network of individual scanning entities for { TAIL ~ scanning bar coded labels }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL