National Identity Card (Spain)

The National Identity Card (DNI) (In the official Spanish language Documento Nacional de Identidad; literally National identity document Spanish pronunciation: [/dokumento/ /naθjonal/ /de/ /iðentiðað/]) or carnet de identidad is a national identity document compulsory to all citizens of Spain aged fourteen and above. It has a personal, unique and exclusive identification number or número de DNI –made up of eight digits plus a control letter– that is assigned to the holder the first time he/she obtains the document and that keeps throughout his/her life as a general identifier.

Source: Wikipedia — National Identity Card (Spain) (CC BY-SA 4.0)