Seoul's public bicycle service Ttareungi (Seoul Bike) lets visitors buy a pass and unlock a bicycle by scanning its QR code in the app. The city's official daily-pass prices are KRW 1,000 for one hour, KRW 2,000 for two hours, or KRW 3,000 for three hours. These are time limits per rental, not continuous possession for the whole day: within 60, 120 or 180 minutes, dock and lock the bicycle at a station and confirm the return-completed notification in the app. You may rent again during the pass validity after a proper return. Exceeding the time limit costs KRW 200 per five minutes, and unpaid surcharges may block further rentals. Non-members can buy daily passes only. Check the app for station availability and current rules; avoid using your phone or earphones while riding and walk bicycles across pedestrian crossings.