T-money

T-money is a rechargeable series of cards and other "smart" devices used for paying transportation fares in and around Seoul and other areas of South Korea. T-money can also be used in lieu of cash or credit cards in some convenience stores and other businesses. The T-money System has been implemented and is being operated by Korea Smart Card Co., Ltd which is 34.4% owned by Seoul Metropolitan City Government, 31.85% owned by LG CNS, and 15.73% owned by Credit Card Union.

Read more about T-money:  Use, History