You can swipe your credit card in the supermarket. Generally, there is a credit card swiping machine at the checkout counter of a supermarket. You can swipe your credit card when you check out, and there is no handling fee.

When swiping a credit card, you need to enter the correct password to pay, and signing is to write your own name. You don't need to enter a password to swipe your card with your signature. You need to apply at the bank counter. Password payment is more secure. If you accidentally lose your card, others can't pay without a password.