T-money is a rechargeable smart card used for public transportation in South Korea. It allows users to pay for bus, subway, and even some taxi fares conveniently, eliminating the need for cash. The card can be topped up at various kiosks and convenience stores, making it easy to use for both locals and tourists. In addition to transportation, T-money can also be used for small purchases at participating stores and vending machines. This versatility makes it a popular choice for daily commuting and casual shopping, enhancing the overall convenience of urban life in South Korea.