Legal analysis: the effect of signature is confirmation, not necessarily seal. The validity of a contract is used to confirm whether the behavior is valid in the event of a dispute. The validity of your signature is that you confirm that the delivery is valid. As long as you can confirm that you have signed this name, then this has been established.

Legal basis: Article 16 of the Law of the People's Republic of China on Resident Identity Cards commits one of the following acts, the public security organ shall give it a warning and impose a fine of not more than 200 yuan. If there is illegal income, the illegal income shall be confiscated: (1) using false certification materials to defraud resident identity cards; (2) Renting, lending or transferring a resident identity card; (3) illegally detaining another person's identity card.