Ring deposit is a bank term, which means that consumers directly deposit (deposit) the money in their bank accounts on IC cards, so that consumers can spend by credit card, avoiding the risks of carrying cash change, loss, counterfeit money and being robbed. Most of the funds are spent by individuals in a specific consumption environment. Credit card deposit is to set up an electronic account under the credit card account, and this electronic account will deposit part of your designated credit card, which is also called e-wallet. The money that has been deposited cannot be withdrawn, and some flash payment services (such as bus credit card and supermarket shopping) can be supported. ).