Four EEA member states do not issue cards defined by EU as national identity cards to their citizens: Denmark, Iceland, Norway and the United Kingdom (except to residents of Gibraltar); although Norway is expected to start issuing such cards from 2020.[2] At present, citizens from these four countries can only use a passport as a travel document when travelling between EEA member states, and Switzerland.[3] However, when travelling within the Schengen Area or Common Travel Area, other valid identity documentation (such as a driving licence or EHIC card) is often sufficient.