The wife can apply to the bank to become the supplementary card holder of her husband's credit card by applying for binding the credit card through the supplementary card. By binding a credit card through a mobile payment platform, a wife can bind her husband's credit card on platforms such as WeChat or Alipay.
Whether it is through the supplementary card application or the mobile payment platform binding, the wife needs to pay attention to protect the security of the credit card when binding her husband's credit card. Avoid credit card information leakage or theft.