Credit card payment and password payment are two different payment methods. Brush face payment can be used, but password input payment cannot be used. There may be the following reasons:

1. Merchant support: Some merchants may only choose to provide face payment, but do not support password payment. This may be due to the decision-making considerations of the merchants themselves, or it may be based on the cooperation agreement with the banks.

2. Banking policy: Different banks may have different policies and regulations, and may have specific requirements for credit card payment methods. Some banks may only restrict the payment by brushing their faces, but not by entering passwords, either to improve the security of payment or to meet specific needs.

3. Terminal equipment support: Face-brushing payment requires that the merchant's terminal equipment has the corresponding face recognition function and is connected with the bank's system. If the merchant's terminal equipment does not support the face recognition function, it is impossible to pay by brushing the face, and the payment can only be made by entering the password.