The National Cable Television Cooperative Inc. (NCTC) , Light Reading Cable has learned, has launched a plan to create a centralized authentication platform for multi-screen services like HBO Go or those planned around the the 2012 Summer Olympics in London.  An authentication system, in this sense, would ensure that customers that try to log into an MSO's TV Everywhere offering via a PC or an iPad are indeed cable TV subscribers and are authorized to view the particular piece of content they have requested.  Several large and mid-sized MSOs have created their own authentication systems for TV Everywhere or are working in tandem with a company like Synacor Inc. to build content portals and develop TV Everywhere interfaces with individual programmers. But that still leaves hundreds of cable operators out there that don't have the resources to build their own system or are not quite big enough to make it worthwhile for one vendor to take them on individually.  The NCTC hopes its aggregated approach will create economies of scale for its MSO members and for TV Everywhere vendors. Instead of forcing hundreds of individual operators to make requests to launch HBO Go, for example, there's an opportunity for the NCTC "to create a bridge, or a common platform" to authenticate their customers for HBO content to be delivered to PCs, tablets and other IP-connected devices, says NCTC VP of Technology Alan Tschirner.