Credit cards do not need any certificates and passwords to swipe their cards abroad, so they can be swiped directly. To be on the safe side, you may be asked to show your ID card. Just in case, it is best to bring your passport, but under normal circumstances, you will not be asked to show it. Only when he doubts whether you are the legal holder will he ask you to show your ID card. Don't worry, it's convenient to swipe your card overseas without any obstacles.