Article R57-13 of the French Code of Criminal Procedure
When an application for home detention under electronic surveillance is made to the investigating judge, the liberty and custody judge or the sentence enforcement judge, or when he or she is considering ordering such a measure ex officio, may instruct the prison integration and probation service to ensure the availability of the technical device described in article R. 622-1 du code pénitentiaire and to verify the family, material and social…