Identity Document (also called a piece of identification or ID, or colloquially as papers) is any document which may be used for Identification
or verify aspects of an Entity
Identity Document is used to perform or verify Authentication.
Identity Document is often utilized by a Verifier during Credential Enrollment
If issued in a small, standard payment Card size form, it is usually called an Identity Card (ID Card).
When the Identity Document incorporates an Entity's photograph, it may be called photo ID.
Identity Document may be either printed or a Digital Identity.
Identity Document may represent a non-person entity. An Example would be an Automobile Title.
Identity Documents may be only passed by-reference implying the Identity Document is simply a Unique Identifier that is a reference to the Identity Document.
There might be more information for this subject on one of the following: