Jiri’s Notepad

Yes, it’s good old pervasive computing.
In this presentation Peter Burger defines pervasive computing as “numerous casually accessible, often invisible network access devices; user accessible anywhere; instant or casual access to network servuce delivered by smart network“. He also outlines three successive stages of pervasive computing:

“Multi-channel - many Devices, many Contexts (one per channel)
Cross-channel - many Devices, […]

Federated digital identity is quite a slippery concept. Because it relates to almost all current trends in IT, ubiquitous computing, user centric computing, web services, and so on, it quite is easy to get some notion of it. However if you start to think about examples, you usually end up with single sign-on to many websites. […]

Articles on Liberty Alliance specification all over the place. The spec itself is however only here.