Mexico

Regulates use of the advanced electronic signature (firma electrónica avanzada) in acts between federal public bodies and private parties, the issue of digital certificates to individuals and related services (Arts. 1-2). Documents and data messages bearing it have the same effects and evidentiary value as handwritten signatures (Art. 7); the Secretaría (de la Función Pública), the Secretaría de Economía and the SAT are certifying authorities, and other bodies may become one with a favourable opinion from the Secretaría (Arts. 23-24). Fiscal, customs and financial matters are excluded, and commercial acts fall under the Código de Comercio (Art. 4). Published 11 January 2012; last reform shown 14 November 2025.