The request of the certificate d’estar to the current of the tributary duties through l’ús of the electronic mail forces l’administració to adopting the necessary measures of technical and organizational character to guarantee the correct identification and authentication of the applicant persons. In so far as the certificate will be sent to fiscal l’adreça that is evident in the data base of l’administració by certified postal mail, to use a mechanism d’acreditació of the identity based on l’enviament by electronic mail of the suitable documentation in a scanned way it can be admissible, although it would be advisable to use other mechanisms that offer more guarantees.