Advanced electronic signature

An electronic signature meeting Article 97 of Mexico’s Commercial Code: its creation data belongs exclusively to the signatory, was under their exclusive control when signing, and subsequent changes to the signature or content can be detected.

The distinction discussed in committee

Both identify the signatory and express approval, and the law gives them effects equivalent to a handwritten signature. An advanced signature also relies on data controlled exclusively by the signatory and makes later changes detectable. When a document is challenged, the reliability of the method used to create and preserve the data message is central.

When it is requested

For transactions where signatory identity has particular consequences: corporate actions, powers of attorney that do not require notarization, payment obligations and records a regulated third party will review. Requiring it for low-risk internal approvals may slow operations without proportionate assurance.