An identity document issued in the form of a small, mostly standard-sized card, is usually called an identity card (IC or ID card).

An identity document (also called a piece of identification or ID, or colloquially as one's 'papers') is any document which may be used to verify aspects of a person's personal identity.

The personal information present on the identity document, or in a supporting database, might include the bearer's full name, a portrait photo, age, birth date, address, an identification number, profession or rank, religion, ethnic or racial classification, restrictions, and citizenship status.

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