Only credit cards in the past did not have passwords and were signature transactions

There are two types of credit card transactions now: 1 signature + password; 2 password.

You can set up this method by calling the credit card service center yourself.

There are many cashiers who will check your signature according to the rules. But there are also many people who are too lazy to check, such as supermarket cashiers.

So it is impossible to talk about safety. Like you said, imitate your signature. In fact, I feel safer if I don’t sign on your card. At least when criminals swipe a card, they have to sign, and they don’t know whose name to sign.