Kirin system suggests that the lack of signature authentication may be due to the limitation of system security settings. Signature authentication is a security measure to verify identity and ensure the credibility of answers. By signing the answer, you can ensure the reliable source of the answer and reduce the spread of false information.

Extended content:

Signature authentication plays an important role in modern communication and information transmission. It can be used to verify the authenticity and integrity of e-mail, files, software, etc. Through digital signature technology, the sender's identity information can be bound to the content of the file to ensure that the file will not be tampered with or forged during transmission. This is widely used in commercial transactions, legal documents, electronic contracts and other fields.

When answering questions, signature authentication can be a way to strengthen the credibility of answers. By signing the answer, you can ensure the reliable source of the answer and reduce the trouble caused by misleading and inaccurate information to users.

However, signature authentication also needs to give consideration to security and convenience. Too strict signature authentication requirements may increase the complexity and inconvenience of user access, while too loose authentication may be easily abused and impersonated. Therefore, when the system realizes signature authentication, it needs to comprehensively consider the balance between security and user experience to ensure the security and credibility of information.