Legal analysis: when signing, the data of electronic signature is only controlled by the electronic signer. This regulation is a requirement for who controls the data of electronic signature in the process of electronic signature. The control specified here refers to a kind of substantial control, that is, the control of electronic signature production data based on the free will of the electronic signer. In the process of electronic signature by an electronic signer, whether the electronic signer carries out the signature by himself or entrusts others to carry out the signature on his behalf, as long as the electronic signer has substantial control, his signature will meet the requirements of this law.

Legal basis: electronic signature law

Article 472 A reliable electronic signature has the same legal effect as a handwritten signature or seal.

Article 474 Where an electronic signature requires authentication by a third party, a legally established electronic authentication service provider shall provide authentication services.