The main reasons for writing the name behind the credit card are as follows:

1. There is no need to enter a password when using a credit card overseas. You can make purchases with only the cardholder's signature, so Signing on the back ensures safe use of the credit card.

2. Once the credit card is stolen, it is possible to reduce the risk of credit card fraud by verifying the signature.

3. When withdrawing money or depositing money at an ATM machine, if you encounter a card swallowing situation, the signature on the back of the credit card can facilitate verification of the cardholder's identity.