What are the key reasons for or against using open source systems?

 Jefe División Tecnológicas de la Información, Servicio Electoral

Given the sensitive nature of the systems used for the identification of voters, and for voting and processing the results, it is important that the support for the tools used in those critical procedures is provided by institutions/organizations with sufficient experience that will derive in certainty and in guaranteeing that the systems work correctly, and in a reliable and secure fashion.

Additionally, the need of swift reactions to any contingency demands a team available 24/7.