It depends on the specific situation. According to the electronic signature law, an electronic contract signed with a reliable electronic signature has the same legal effect as a paper contract signed or sealed by hand. According to the "Electronic Signature Law", a reliable electronic signature is considered if it meets the following conditions: when the electronic signature production data is used for electronic signature, it belongs to the electronic signer; When signing, the electronic signature production data is only controlled by the electronic signer; Any changes to the electronic signature after signing can be found; Any changes to the content and form of the data message after signing can be found.