Clef is like a retina scan for your smart phone, which gives a whole new meaning to Retina Display. You can use Clef as an Open ID to log in from your smart phone only once to access many different web sites when online. Rather than typing in your user ID and password for each web site.
OpenID has promised to simplify the user authentication process across multiple websites, but some complain it has actually created more problems. 37signals, an early supporter of OpenID, has announced the decision to stop using it across its products. Is OpenID delivering what it promised?
In this presentation from QCon SF 2007, Justin Gehtland explains two open solutions to distributed identity and their Rails integration components: the OpenID system (using ruby-openid) and CAS (using rubycas-client).
As more social networking sites are popping up, the questions around the data they keep are rising. Data portability has become the watch phrase across the Web 2.0 world. Is there something to be learned about data access and portability from these services?
For those of you looking at using OpenID, there is a .NET compatible library available. The Library was written in Boo, a .NET language inspired by Python. It also leverages a library from the Mono project.