You're not a citizen of Macedonia, Cuba, Syria, Sudan or Iran
You're holding a valid visa for Australia in the form of a physical sticker (e-visas are excluded)
You are traveling to Australia from any country OR traveling from Australia to any country
You have a confirmed ticket to Australia departing within 30 calendar days of entering South Korea OR you have a valid ticket to any country outside of South Korea, if arriving directly from Australia
You have no record of criminal offence in any of the five countries (U.S., Japan, Canada, Australia, New Zealand)