주민등록
jumindeungnok · Resident registration
The national registration system for Korean citizens; the resident registration number is used for almost everything.
Watch outMany websites ask for a resident number — foreigners use their alien registration number instead, and some sites don't accept it.
What you needFor citizens: an ID card; for foreigners, see alien registration.
Examples
외국인등록번호로도 가입돼요?
oegugindeungnokbeonhorodo gaipdwaeyo?
Can I sign up with an alien registration number?