Australian passports are travel documents issued to Australian citizens under the Australian Passports Act 2005 by the Australian Passport Office of the Department of Foreign Affairs and Trade (DFAT), both in Australia and overseas, which enable the passport bearer to travel internationally. Australian citizens are allowed to hold passports from other countries. Since 1988 over a million Australian passports have been issued annually, and it reached 1.4 million in 2007, and increasing towards a projected 3 million annually by 2021. Since 24 October 2005 Australia has issued only biometric passports, called ePassports, which have an embedded microchip that contains the same personal information that is on the colour photo page of the passport, including a digitised photograph. As all previous passports have now expired, all Australian passports are now biometric. SmartGates have been installed in Australian airports to allow Australian ePassport holders and ePassport holders of several other countries to clear immigration controls more rapidly, and facial recognition technology has been installed at immigration gates. History Before 1901, Australia consisted of six separate British colonies. Passport usage was not common, and if required British or other national passports were used. In 1901, the six colonies joined to form the Commonwealth of Australia, although Australians retained British nationality. It was only in 1912 that the first Federal passport regulations were introduced, and the passports issued by the Australian government still bore the words "British Passport" on the cover until 1967. During World War I, the monitoring and identifying of those crossing international borders was regarded as critical to the security of Australia and its allies, and the War Precautions Act 1914 required all persons over 16 years of age, on leaving Australia, to possess some passport. Australian nationality came into existence on 26 January 1949 when the Nationality and Citizenship Act 1948 came into force, and Australian passports began to distinguish between Australian citizens and other British subjects. British subjects, who were not Australian citizens, continued to be entitled to an Australian passport. The term "British subject" had a particular meaning in Australian nationality law. The term encompassed all citizens of countries included in the list contained in the Nationality and Citizenship Act 1948. The list of countries was based on, but was not identical with, those countries (and their colonies) which were members of the Commonwealth from time to time. The list was amended from time to time as various