When you go to the bank to reissue your bank card, you must give a copy of your ID card to the bank, which is also proof that you have gone through the formalities of reissue your bank card. This is a normal request, you don't have to worry. Regular banks have formal policies and regulations, and will never use a copy of your ID card to do things you don't understand. Don't worry, and you know that many enterprises in society now need you to hand in a copy of your ID card to handle business, such as mobile phone cards and bank cards. And you don't have to worry, just having a copy of your ID card won't do. You must also have my signature to play a role, such as handling high-value loan business.