In South Korea, you can pay with cash and credit cards, or download mobile payment apps for electronic payments.

1. Korean Won
   The official currency of South Korea is the Korean Won. Currently, both coins and banknotes are in circulation. The banknotes come in denominations of 1,000, 5,000, 10,000, and 50,000 won, while the coins come in denominations of 10, 50, 100, and 500 won.

2. Exchange Rate
   It’s important to be aware of the exchange rate between the Korean Won and the currency of your home country. To get the best deal when exchanging money, it’s a good idea to check real-time exchange rates regularly.

3. Currency Exchange
   You can exchange for Korean Won in your home country before departure, or exchange for it upon arrival in South Korea at currency exchange shops in areas like Myeongdong or Dongdaemun. These exchange shops often offer competitive rates, but rates can vary between different shops, so it’s a good idea to compare them before making a choice.

Some ATMs in South Korea also allow you to withdraw Korean Won directly using your credit or debit card.

1. Payment
   Cash Payment: Although credit cards and mobile payments are widely used, cash is still the most popular payment method in some small shops, traditional markets, or rural areas.

Bank Card Payment: It is mainly used for shopping at duty-free stores or large department stores.

Mobile Payment: Major payment methods include Samsung Pay, Kakao Pay, Naver Pay, etc. WeChat and Alipay can also be used to make payments in most places in South Korea.