1. A subset of access permissions (developed with the use of media-independent data) attesting to, or establishing, the identity of an entity, such as a birth certificate, driver’s license, mother’s maiden name, social security number, fingerprint, voice print, or other biometric parameter(s). [After X9.69] 2. [In security], information, passed from one entity to another, used to establish the sending entity’s access rights. [INFOSEC-99].3. Data that serve to establish the claimed identity of a security subjective relative to a given security domain [ECMATR46].4.Data that is transferred to establish the claimed identity of an entity [7498-2].