Scan-to-Email Domain Verification in Image Forming Devices
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Solution Overview
Problem
Conventional image-forming devices lack the ability to restrict the transmission of scan data via email to unauthorized or unregistered email addresses, potentially leading to unauthorized access and data security risks.
Innovation Solution
The image forming device incorporates a controller that performs transmission processes based on registered domains stored in memory, restricting transmission when no matching domain is found, and allowing transmission only to authorized subdomains or specific domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device allows transmission to any email address, then ease of operation is improved, but data security deteriorates
Solution Approach 1:
The system performs preliminary verification by checking whether the domain extracted from the email address matches any registered domain in the memory before allowing transmission. This preliminary action prevents unauthorized transmissions while maintaining ease of operation for legitimate email addresses.
Solution Approach 2:
The domain matching check acts as an intermediary mechanism between the user's transmission request and the actual email sending process. It mediates by allowing transmission only when the domain verification succeeds, thus securing data while preserving operational ease for authorized recipients.
2Object-affected harmful factors
If the device restricts transmission to registered domains only, then data security is improved, but adaptability deteriorates
Solution Approach 1:
The system dynamically adjusts its transmission restrictions based on domain matching results. When a match is found, transmission is permitted; when no match is found, transmission is restricted. This dynamic approach balances security requirements with adaptability to different transmission scenarios.
Solution Approach 2:
The system changes the transmission permission parameter based on the domain matching condition. The permission state transitions between restricted and permitted according to whether the email domain matches registered domains, enabling flexible adaptation while maintaining security.
3Object-affected harmful factors
If the device performs domain matching verification, then data security is improved, but device complexity increases
Solution Approach 1:
The system extracts only the domain portion from the complete email address for verification purposes. This extraction approach simplifies the verification process by focusing only on the critical domain component rather than analyzing the entire email address, thus improving security without significantly increasing complexity.
Solution Approach 2:
The system uses a simplified copy of the email address (just the domain part) for verification instead of processing the complete email address. This copying strategy reduces the complexity of the verification mechanism while maintaining effective security control.
Data Source
AI summary
In an image forming device, on a condition that a transmission instruction including an email address is received, and the memory stores a registered domain matching a target domain extracted from the email address, a controller performs a transmission process. The transmission instruction is an instruction to transmit scan data to be generated by the scanner to the email address. The transmission process is to transmit an email having the generated scan data to the email address. On a condition that the transmission instruction is received, and the memory stores no registered domain matching the target domain, the controller restricts the transmission process. On a condition that the transmission instruction is received, the memory stores no registered domain matching the target domain, and the target domain is a subdomain of a specific domain, the controller performs the transmission process. The specific domain is a registered domain stored in the memory.