Legal analysis: A signature is required. According to the provisions of the "Electronic Signature Law", an electronic signature refers to a data message contained in electronic form and attached to identify the signer's identity and indicate that the signer recognizes the content. data. There are many commonly used technical means to implement electronic signatures, including: biometric data (such as iris, fingerprint), digital images of handwritten signatures or seals, digital signatures based on public key cryptography, etc. Due to different applied technologies, there are also differences in security.

Legal basis: "Electronic Signature Law of the People's Republic of China"

Article 13 If an electronic signature meets the following conditions at the same time, it will be regarded as a reliable electronic signature:

p>

1. When the electronic signature production data is used for electronic signature, it is exclusive to the electronic signer;

2. The electronic signature production data is only controlled by the electronic signer when signing;

3. Any changes to the electronic signature after signing can be discovered;

4. Any changes to the content and form of the data message after signing can be discovered.

The parties may also choose to use an electronic signature that meets the reliability conditions agreed by them.

Article 14 A reliable electronic signature has the same legal effect as a handwritten signature or seal.