This invention relates to unique object identification and, in particular, to methods and {HEAD ~ systems} for identifying and interacting with {TAIL ~ objects} 
for interacting with
This invention relates to unique object identification and , in particular , to methods and { HEAD ~ systems } for identifying and interacting with { TAIL ~ objects }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL