ETC claim that the Nexbis 2D bar codes are "forensic" level codes. Apparently this level of security is unique to them and is why they've been winning the deals. I've been watching IBM and other major player move into this space. IBM loves patents and would be all over this technology. They could also be eying off companies like ETC as a potential purchase.
I doubt any of the Sapio technology could be ported to the Nexbis bar code tech - its ground up code for gambling, chat etc
ETC
entertainment media & telecoms corporation limited