[foaf-dev] proposal for foaf:openid property
henry.story at bblfish.net
Mon Jun 18 17:11:04 BST 2007
On 16 Jun 2007, at 19:38, Dan Brickley wrote:
> Draft in progress. Anyone object to this going into the spec?
> Property: foaf:openid
> openid - An OpenID for an Agent.
> Status: unstable
> OWL Type: An InverseFunctionalProperty (uniquely identifying
> Domain: foaf:Agent
> Range: foaf:Document
> A foaf:openid is a property of a foaf:Agent that associates it with
> a document that can be used as an indirect identifier in the manner
> of the OpenID "Identity URL". As the OpenID 1.1 specification
> notes, OpenID itself"does not provide any mechanism to exchange
> profile information, though Consumers of an Identity can learn more
> about an End User from any public, semantically interesting
> documents linked thereunder (FOAF, RSS, Atom, vCARD, etc.)". In
> this way, FOAF and OpenID complement each other; neither provides a
> stand-alone approach to online "trust", but combined they can
> address interesting parts of this larger problem space.
> The foaf:openid property is "inverse functional", meaning that
> anything that is the foaf:openid of something, is the foaf:openid
> of no more than one thing. FOAF is agnostic as to whether there are
> (according to the relevant OpenID specifications) OpenID URIs that
> are equally associated with multiple Agents. FOAF offers sub-
> classes of Agent, ie. foaf:Organization and foaf:Group, that allow
> for such scenarios to be consistent with the notion that any
> foaf:openid is the foaf:openid of just one foaf:Agent.
> FOAF does not mandate any particular URI scheme for use as
> foaf:openid values. The OpenID 1.1 specification includes a
> delegation model that is often used to allow a weblog or homepage
> document to also serve in OpenID authentication via "link rel" HTML
> markup. This deployment model provides a convenient connection to
> FOAF, since a similar technique is used for FOAF autodiscovery in
> HTML. A single document can, for example, serve both as a homepage
> and an OpenID identity URL.
> foaf-dev mailing list
> foaf-dev at lists.foaf-project.org
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