Koreans and Foreign residents (includes foreign spouses of Koreans) are issued 13-digit ID numbers. However, there are some small differences in the numbering which have important effects. Each person's birthdate (year-month-day) appears in the beginning of the series, followed by a code for gender, which is where the differences occur.
The gender designation for - A Korean male is 1 - A Korean female is 2 - A Foreign male is 5 - A Foreign female is 6
For a variety of reasons, computers, government documents, family registers, etc. accept only a 1 or 2 in the 7th position in the 13 number series. If your number is 5 or 6, you're frozen out.
Not only must one provide one's identification number for official documents, but also when one tries to book movie or theatre tickets on-line, or flight reservations, or a host of other on-line activities.
Are there regulations that you have found inconvenient or discriminatory in Korea? The Prime Minister's Office is inviting your feedback. Suggestions must be sent before the end of March.
A must-read for anyone interested in Korea's economy. English version available end February. Korean translation to follow in March/April. Win a free copy through Korea4Expats. Click on image for details.