OCLC (Online Computer Library Center) is a nonprofit computer library service and research organization. More than 72,000 libraries in 112 countries and territories around the world have used OCLC services to locate, acquire, catalog, lend and preserve library materials. OCLC wants to develop a cooperative trust framework for libraries and their users that can effectively serve as an "online library card".

By registering an OpenID or Information Card credential at an OCLC-affiliated library, a user would effectively gain entrance to the entire OCLC library network. They could access online materials at other libraries in the network the same way they would be able to physically access them using a conventional offline library card. And using an OIX trust framework, the value of membership in the OCLC library network could easily be extended to other sites such as bookstores, catalogs, travel sites, etc.