eduPersonTargetedID (eptid) is a user identifier attribute defined in the eduPerson→ LDAP object class. It is a persistent, non-reassigned, opaque identifier. eduPersonTargetedID is designed to prevent two relying parties receiving user information from an Identity Provider from correlating user information, thus revealing the user identity when it is not intended.
eduPersonTargetedID is deprecated. Deployers who currently rely on eduPersonTargetedID should devise plans to transition to use the SAML 2 Pairwise Subject Identifier instead.