Simon Says – Musings of a Technology CTO

Effective as of July 6th 2010, the new la Ley Federal de Protección de Datos Personales en posesión de los particulares, or “Federal Law for Protection of Personal Data held by Private Persons” enforces obligations of disclosure, and has penalties and fines. Companies must act on requests for information about personal data held, and can deny transfer of data and request deletion.

A great writeup by Roumiana Deltcheva can be found on MessageingArchitects.com, and you can get the full text of the law from the Senado site (though in Spanish of course).