Printer Dual Authentication Segmentation
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Solution Overview
Problem
Existing image forming apparatuses allow unauthorized printing if authentication information is leaked, as they do not adequately prevent unauthorized access even after initial authentication.
Innovation Solution
Implementing a dual authentication system where the first authentication information is stored on a portable medium, and if leaked, the system transitions to using second authentication information to limit unauthorized printing until a predetermined condition is met, thereby reducing the risk of unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If only first authentication information is used for user authentication, then ease of operation is improved, but security deteriorates as unauthorized printing can occur if the authentication information is leaked
Solution Approach 1:
The authentication process is segmented into multiple stages: first authentication information (card ID) for initial access, and second authentication information (password) for continued access. This segmentation allows the system to balance ease of operation with security by requiring different authentication methods at different times.
Solution Approach 2:
The system performs preliminary authentication using first authentication information stored on a portable medium to grant initial access. This preliminary action enables convenient access while setting up the framework for subsequent security measures through second authentication information verification.
2Reliability
If second authentication information is required for every printing operation, then security is improved, but ease of operation deteriorates due to repeated authentication requests
Solution Approach 1:
The system implements periodic authentication by requiring second authentication information only at specific intervals or under certain conditions (when a predetermined number of sheets remain), rather than continuously. This periodic verification maintains security while minimizing disruption to normal printing operations.
Solution Approach 2:
The authentication requirements dynamically adjust based on system state - the need for second authentication information arises only when specific conditions are met (such as when a predetermined number of sheets remain in the tray), making the authentication process adaptive rather than static.
3Reliability
If authentication information request condition is set to require second authentication frequently, then unauthorized printing is reduced, but productivity deteriorates due to interrupted printing operations
Solution Approach 1:
The system applies partial authentication verification by requiring second authentication information only when a predetermined number of sheets remain, rather than verifying every single sheet. This partial verification provides sufficient security against unauthorized printing while minimizing interruptions to maintain productivity.
Data Source
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AI summary
Unauthorized printing in case of leaking of authentication information is less likely to occur. A printing apparatus (1) includes a printing section (12), an input reception section (14, 16), an input request section (14) and a control section (11). If an authentication information request condition is satisfied for a user who is authenticated by a first authentication process (S201), the control section (11) controls the input request section 814) to request the user to input second authentication information. The control section (11) executes a second authentication process (S307) to authenticate the user with using second authentication information. If the user is authenticated (Yes at step S308), the printing section (12) is allowed to execute a printing operation, if the user is not authenticated (No at step S308), the printing section (12) is prohibited from executing a printing operation (S313).