Legal analysis: First, it is suggested that you can use special signature software to directly open the signed document for handwritten signature. Special signature software has handwriting verification function, which can detect the unique binding between handwriting and document. However, at present, the identification of electronic contracts in China is still complicated. I suggest that if it is a very important document, you can quickly sign an electronic version first, and then make up a paper version afterwards.

Two, the electronic contract must meet the following requirements to be effective:

(a) the original form of electronic contract requirements:

1, which can effectively express the content and can be retrieved for reference at any time;

2. It can reliably ensure that the content remains complete and unchanged from the time it is finally formed. However, adding endorsements to data messages and changing forms in the process of data exchange, storage and display do not affect the integrity of data messages.

(2) Requirements for saving electronic contracts:

1, which can effectively express the content and can be retrieved for reference at any time;

2. The format of the data message is the same as that when it was generated, sent or received, or different, but it can accurately represent the content originally generated, sent or received;

3. Be able to identify the sender and receiver of the data message and the time of sending and receiving.

(3) Requirements for electronic signature:

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

2. When signing, the electronic signature production data is only controlled by the electronic signer;

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

Any changes in the content and form of the data message after signing can be found.

3. Not applicable to electronic documents:

1, involving personal relationships such as marriage, adoption and inheritance;

2, involving the cessation of water supply, heating, gas supply and other public utilities services;

3, involving the cessation of water supply, heating, gas supply, power supply and other public utilities services;

4. Other circumstances in which electronic documents are not applicable as stipulated by laws and administrative regulations.

Legal basis: People's Republic of China (PRC) Electronic Signature Law.

Thirteenth electronic signatures meet the following conditions at the same time, as reliable:

(1) When the electronic signature production data is used for electronic signature, it belongs to the exclusive rights of the electronic signer;

(2) When signing, the electronic signature production data is only controlled by the electronic signer;

(3) Any changes to the electronic signature after signature can be found;

(4) Any changes to the content and form of the data message after signature can be found.

The parties can also choose to use electronic signatures that meet their agreed reliable conditions.

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