When to use signature in Korean
Korean: 서명[ seo-myeong ]

When to use it
서명 means a signature, or the act of writing your name by hand. People use it to show who they are or to agree to something. You often see it on forms, receipts, letters, and delivery papers.
Example sentences
여기에 서명해 주세요.
Please sign here.
엄마가 학교 알림장에 서명했어요.
Mom signed the school notice book.
저는 가게에서 카드 영수증에 서명했어요.
I signed the card receipt at the store.
택배를 받고 서명했어요.
I signed after receiving the package.
공항에서 이 서류에 서명해야 해요.
I have to sign this document at the airport.
친구가 제 사진 뒤에 서명해 줬어요.
My friend signed the back of my photo.