Fuente: Wipo "digitalization" The communication devices are produced with a distinct digital certificate to later identify themselves during communication with a central management apparatus. The identity of the communication device guarantees that appropriate information is provided to the central management apparatus from the communication device. For example, if charge information is uploaded from the communication terminal to the central management apparatus to generate an invoice or a charge, the information should be native or germane to the original device containing the communication device. To avoid the inaccurate information, the digital certificate is confirmed against a predetermined list of the digital certificates at the central management apparatus prior to uploading the information.