National identity cards in the European Economic Area
National identity cards are issued to citizens of all European Union member states except Denmark, Ireland and the United Kingdom, and also to citizens of Liechtenstein and Switzerland (the latter not formally part of the EEA). Citizens holding a national identity card, which state EEA or Swiss citizenship, can not only use it as an identity document within their home country, but also as a travel document to exercise the right of free movement in the EEA and Switzerland. Identity cards that do not state EEA citizenship, including national identity cards issued to residents who are non-EEA citizens, are not valid as a travel document within the EEA and Switzerland.National identity cards are often accepted for unofficial identification purposes (such as age verification in bars) in other parts of the world.At present, five EEA member states (Denmark, Iceland, Ireland, Norway and United Kingdom) do not issue national identity cards to their citizens. Therefore, EEA member states' citizens from these five countries can only use a passport as a travel document when travelling to other countries in the EEA or Switzerland, unless travelling within the Schengen Area, Nordic Passport Union or the Common Travel Area, where any valid identity document is usually sufficient, if anything at all. Ireland and Norway have decided to start issuing such cards, Ireland in September 2015 and Norway in 2017.