?? ???? ??? ?? ???? ???? ???? ?? ?? ? ??? ??? ???? ? ????? ????? ?? ? ? ????. ?, ???? ??? ?? ??? ???? ???? ???? ?????.“???”? ?? ? ???? ???? ? ??? ?? ? ???? ???? ???? ?? ????.To cater on the mobile-savvy population of Busan, “??” has developed a mobile-only app. This application offers area-dependent solutions, rendering it unbelievably easy