What is wrong about the signature of the application form is that the signature of the "Citizen's Personal Information Inquiry and Use Authorization" is as important as the application form and needs to be signed in block letters. According to the relevant query information, it is correct that with the authorization of the customer, the applicant can sign on behalf of the customer, the spouse of the main card applicant can agree to sign on behalf of the applicant, and the signature can be in traditional Chinese or artistic style.