It will be better to buy a T-money to use public transport.
You can buy them atÂ
Convenience stores
- Nationwide: GS25, CU, Ministop
- Metropolitan area (Seoul, Gyeonggi, Incheon): 7-Eleven, Seaspace, Storyway
Subway
- Customer Safety Office (Lines 1-4)
- i-Center (Lines 5-8) in subway stations in the metropolitan area