The initial setting of CCB credit card is that all credit cards in China need authentication and signature. If the landlord has called his home service hotline to make changes, there will be two situations. One is to authenticate more than a certain amount (for example, credit cards with an authentication amount of more than 500,500 need authentication, and those with an authentication amount of less than 500 don't need authentication), and the other is not to authenticate, but both of them need signature confirmation.

In addition, you don't need to enter a password to swipe your card overseas through the international organization network (VISA, MasterCard, JCB), just sign it.

You can ask them if you have any other questions.