The modern household registration system was started in early 20th century when Taiwan was under Japanese rule.
Later regimes including Kingdom of Tungning and the Qing Taiwan administration maintain similar registers on local family profiles of the Taiwanese people.
In these eras, registers on families were also used to organize Taiwanese people to conduct civil defense, known as the Hoko system.
[2] In the early 20th century during Japanese rule, the Government-General of Taiwan started to build very thorough household registration records for both families and persons, like the Koseki system implemented in Mainland Japan.
The records established in 1906 forms the basis of modern household registration after the World War II until today.
[4] Later, with the tension of the Second Taiwan Strait Crisis, the competent authority of the household registration was transferred to the National Police Agency in 1969.