Tuesday, December 05, 2006

An inconvenient truth

Conor takes exception to Johannes's 'Identity Triangle' diagram.

Conor's meta-objection seems to be that the diagram slots the three identity systems into a nice clean and seemingly intuitive model, but does so based on only on those criteria that ensure the fit - the reality of the blurry lines that distinguish the different systems are an inconvenient truth to be shuffled aside.

The 'user-centric' dotted line that excludes SAML is of course an old standby. I could just as easily draw a dotted line around SAML & Cardspace labelled 'privacy respecting' - a gross over-simplification but one with a kernel of truth when OpenID is used with global URIs.

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