| 摘要 |
PURPOSE:To improve the confidentiality of document communication by using a registered external character depending on the specific handwriting of a user as a secret code in a communication network accommodating a docement processing unit. CONSTITUTION:The document processing unit 2 is accomodated to a communication network 1 and the system is constituted so as to attain mutual document communication, and the communication network 1 is provided with an information service center 3 and a secret code registering device 5. The center 3 registers and offers a document formed by the processing unit 2 and the registering device 5 stores the secret code by which the utilization of a registered document by a personnel other than a specific personnel is prevented. As the secret code, an external character registered by the document processing unit 2 by using an external registration function is used. Since the registered external character depends on the handwriting specific to the user, the mimicry by the 3rd party is disabled thereby improving the confidentiality remarkably. |
