Dutch passports are issued to citizens of the Kingdom of the Netherlands (Dutch: Koninkrijk der Nederlanden) for the purpose of international travel. As the Netherlands only distinguish one category of citizen (Nederlandse (Dutch), NLD), for all countries in the Kingdom, passports are the same for all four countries. The passport also serves as a means of identification as required by the Dutch law since 1 January 2005 for all persons over the age of fourteen. Dutch passports are valid for a period of ten years from issuing date. The passport complies with the rules (EU 2252/04) for European Union passports.Since 26 August 2006 all passports are issued as a biometric passport with an embedded contactless smartcard RFID chip for storing biometric data.Every Dutch citizen is also a citizen of the European Union. The nationality allows for free rights of movement and residence in any of the states of the European Union, other European Economic Area states as well as Switzerland.