2. Few people will see that there is no signature on your back now;

I am a little different from you. Because my handwriting is not good-looking, I simply leave it blank; It has been used for two years, about two or three times in the middle, and the other party has to ask for signature when swiping the card; I explained the following, it doesn't matter;

4. Neither signing nor signing will affect the use of credit cards;