You may have heard of the Jericho Forum. The JF advocates a modern approach to information security that takes into account modern business needs, in particular de-perimeterisation. The JF is now a forum within the Open Group and has produced a lot of helpful guidance on the Open Group web site.
The JF has now got interested in how to manage identity to support de-perimeterisation. The core of the JF's approach is that people must be allowed to have multiple identities for multiple purposes, but also need to be able to link identities in a controlled way. People must be able to control the linkage of identities to attributes. This is described in more detail in a set of commandments.
The whole concept is now explained in 5 very nice and simple videos. Here's is the 4th (with links to the previous 3). The 5th comes out soon.