Resident registration number

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In the Republic of Korea, a resident registration number (RRN) (Korean: 주민등록번호; Hanja: 住民登錄番號; RR: jumin deungnok beonho) is a 13-digit number issued to all residents of South Korea regardless of nationality. Similar to national identification numbers in other countries, it is used to identify people in various private transactions such as banking and employment. It was also used extensively for online identification purposes, but after 2013 resident registration number cannot be used for identification unless other laws require processing resident registration numbers.^[1] Foreign nationals receive a foreign resident number (외국인등록번호) upon registration with the local immigration office.

Every South Korean citizen within a month of their 17th birthday registers their fingerprint at the government local office and is issued the Resident Registration Card (주민등록증) that contains their name, registration number, home address, fingerprint and picture.