which contracts that cannot be signed electronically involve personal relationships such as marriage, adoption and inheritance; Documents involving the transfer of real estate rights and interests such as land and houses cannot use electronic signatures. The following is a contract that cannot use electronic signatures compiled by Xiaobian. I hope it will help you. ? According to Article 3 of the Electronic Signature Law of the People's Republic of China, the parties may agree to use or not use electronic signatures and data messages in civil activities. A document with electronic signature or data message agreed by the parties shall not be denied its legal effect just because it is in the form of electronic signature or data message. The provisions of the preceding paragraph do not apply to the following documents: (1) personal relationships such as marriage, adoption and inheritance are involved; (two) involving the cessation of water supply, heating, gas supply and other public utilities services; (3) Other circumstances in which electronic documents are not applicable as stipulated by laws and administrative regulations. The summary of Xiaobian ends here. If you have more questions about this, please feel free to consult. We provide professional legal consulting services and a professional team of lawyers will answer your doubts.