Today with openid connect the default value for the sub is most often a provider assigned identifier for the end-user, this type of subject identifier does not formally have a type or name because it is the only one supported, with this spec we are extending the types of subject identifiers that the provider may support and hence may need to name this subject type for backwards compatibility.
Today with openid connect the default value for the sub is most often a provider assigned identifier for the end-user, this type of subject identifier does not formally have a type or name because it is the only one supported, with this spec we are extending the types of subject identifiers that the provider may support and hence may need to name this subject type for backwards compatibility.