Further, for tracking the items, decrypting the unique codes of a marked item to obtain the unique reference, and creating and storing the tracking records in a unique storage location, where {HEAD ~ the unique reference} refers to {TAIL ~ the unique storage location} 
refers to
Further , for tracking the items , decrypting the unique codes of a marked item to obtain the unique reference , and creating and storing the tracking records in a unique storage location , where { HEAD ~ the unique reference } refers to { TAIL ~ the unique storage location }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL