What kind of identifier types are expected to be defined in the XRI Identifier Types specification?
The purpose of the Identifier Types specification is to specify a set of XRIs in the $t namespace that can be used to tag commonly used identifiers for purposes of cross-context interoperability. Many of the candidate identifier types will be drawn from the work currently underway at the Core Identifier Workgroup and at the Network Applications Consortium XRI Profile Working Group. These include UUIDs, OIDs, UIDs, X.500 distinguished names, operating system usernames, etc.
