Image Forming Access Control for Initial Password Change
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Solution Overview
Problem
Existing image forming apparatuses face security challenges due to the use of common initial passwords, necessitating immediate password changes by users, but this process can hinder efficient setup and operation at manufacturing sites.
Innovation Solution
The apparatus includes a controller that restricts certain functions until a user changes the initial password, allowing temporary availability through a manufacturer-specific special operation, enhancing security while enabling efficient setup by allowing partial functionality during password change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the initial password is kept common for security purposes, then security is improved, but operational efficiency deteriorates because users cannot perform setup operations without changing the password first
Solution Approach 1:
The patent applies dynamics by making the password requirement state changeable. The system transitions from a static state where all functions are blocked until password change, to a dynamic state where a special operation can temporarily override the restriction. This allows the system to adapt between security mode and operational mode based on user needs.
Solution Approach 2:
The patent changes the parameter of password verification by introducing a special operation that modifies the normal password checking process. When the special operation is detected, the system temporarily alters its password verification behavior to allow access without requiring the initial password change, thus changing the operational parameters to enable both security and efficiency.
2Reliability
If the initial password is changed immediately for security, then security is improved, but device complexity increases due to additional password management operations
Solution Approach 1:
The patent extracts the password change requirement from the mandatory path by providing an alternative access method through the special operation. This separates the security function (password change) from the operational function (setup tasks), allowing users to perform setup operations without completing the password change process, thus reducing the perceived complexity.
3Reliability
If all functions are restricted until password change, then security is improved, but ease of operation deteriorates because setup and testing cannot be performed
Solution Approach 1:
The patent applies partial action by allowing partial access to functions through the special operation without requiring full password change completion. The system provides just enough access (partial action) to perform necessary setup and testing operations while maintaining the security restriction for full functionality, thus improving ease of operation without compromising overall security.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
An image forming apparatus (1) includes an operation device (47) receiving an input of an instruction from a user, and a controller (100) executing change of a password in response to a user instruction input from the operation device (47). The controller (100) causes a part of the functions of the image forming apparatus (1) to be in an unavailable state until change of an initial password is executed, and causes the functions, which are prohibited from being used until change of the initial password is executed, to be in a temporarily available state when the operation device (47) receives a predetermined special operation constituted of a combination of two or more operations.