Abstract: An information processing apparatus includes a processor configured to: recognize an authenticated user by user authentication; and perform a process of displaying, on a display unit, an image indicating a region on an operation unit touched by an unauthenticated user other than the authenticated user.

Abstract: A print control apparatus includes a processor. The processor is configured to transmit generation condition data to a printer. The generation condition data includes a generation condition for a checksum value. The generation condition is based on identification information of the printer. The processor is also configured to check a first checksum value against a second checksum value to confirm the authenticity of the printer. The first checksum value is generated by the printer according to the generation condition. The second checksum value is generated according to the generation condition on the basis of the identification information of the printer.

Abstract: A print control apparatus includes a processor. The processor is configured to transmit generation condition data to a printer. The generation condition data includes a generation condition for a checksum value. The generation condition is based on identification information of the printer. The processor is also configured to check a first checksum value against a second checksum value to confirm the authenticity of the printer. The first checksum value is generated by the printer according to the generation condition. The second checksum value is generated according to the generation condition on the basis of the identification information of the printer.

Abstract: A print control apparatus includes a print request receiving unit and a print control unit. The print request receiving unit receives a print request, including print target information, to a print apparatus. If a condition is satisfied under which print target information should have information regarding security added thereto for printing, the print control unit adds the information regarding security to the print target information and causes the print apparatus to print the print target information to which the information regarding security is added. If the condition is not satisfied, the print control apparatus stores the print target information included in the print request in a storage unit, and when an operation receiving unit provided in the print apparatus is operated to instruct to print the stored print target information, the print control apparatus causes the print apparatus to print the stored print target information.

Abstract: A document management device, which includes: a document receptor that receives a document; a pattern information generator that generates first information on which a first background pattern image is based; an addition section that adds the first information to the document; a setter that sets, to the document, a prohibition on editing the first information; a document storage that stores the document having the first information added thereto; a printing request receptor that receives a printing request; an prohibition lifting section that lifts the prohibition; an edition section that edits the first information to make second information on which a second background pattern image is based; a printing image generator that generates a printing image having the second background pattern image incorporated thereinto; and a sender that sends, to an image formation device, the printing image having the second background pattern image incorporated thereinto.

Abstract: A print control apparatus includes a print request receiving unit and a print control unit. The print request receiving unit receives a print request, including print target information, to a print apparatus. If a condition is satisfied under which print target information should have information regarding security added thereto for printing, the print control unit adds the information regarding security to the print target information and causes the print apparatus to print the print target information to which the information regarding security is added. If the condition is not satisfied, the print control apparatus stores the print target information included in the print request in a storage unit, and when an operation receiving unit provided in the print apparatus is operated to instruct to print the stored print target information, the print control apparatus causes the print apparatus to print the stored print target information.