Printing Device Work Attendance Data Deletion
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Solution Overview
Problem
Conventional user authentication systems often delete user ID information at inappropriate times, failing to accurately determine when to remove this information based on communication status and login authentications.
Innovation Solution
A work attendance management system that includes a server and printing devices, where the server stores user identification and work information, and the printing devices have a deletion mechanism that removes information after work hours, ensuring timely deletion of unnecessary data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user ID information is deleted based on communication status and login authentications, then data security is improved, but the deletion timing becomes inaccurate and user information may be deleted at inappropriate times
Solution Approach 1:
The system performs preliminary actions by storing user ID information and work information in advance in the printing device before the user actually needs to work there. The server transmits this information to the printing device ahead of time, so that when the user arrives, authentication can proceed smoothly without deletion issues. This resolves the contradiction by ensuring information is available when needed but will be automatically deleted after work hours end.
Solution Approach 2:
The system implements feedback mechanisms where the server tracks work hour information and automatically determines when to delete user ID information. The deletion timing is based on feedback from work hour data rather than simple communication status, ensuring accurate timing that balances security with usability. The server monitors whether work hours have ended and triggers deletion accordingly.
2Ease of operation
If user ID information is retained in printing devices, then user authentication convenience is improved, but unnecessary data accumulation occurs and security risks increase
Solution Approach 1:
The system makes the retention of user ID information dynamic rather than static. Information is retained only during work hours and automatically deleted after work hours end. This dynamic approach allows convenient authentication during work periods while preventing unnecessary data accumulation outside work periods, resolving the contradiction between convenience and data loss.
Solution Approach 2:
The system discards user ID information after it has served its purpose during work hours. The server automatically deletes the information from the printing device after confirming work hours have ended, ensuring that unnecessary data is discarded while the information was needed for authentication during work periods.
3Reliability
If user ID information is deleted immediately after communication ends, then data security is improved, but user authentication fails when users need to log in outside communication periods
Solution Approach 1:
The system performs preliminary action by transmitting and storing user ID information and work information in the printing device before the user actually needs to authenticate. This ensures information is available for authentication during work hours while still maintaining security through automatic deletion after work hours end, resolving the contradiction between security and availability.
Solution Approach 2:
The system uses feedback from work hour information to determine deletion timing rather than simply deleting after communication ends. The server monitors work hour data and triggers deletion only after work hours have ended, ensuring authentication remains available during work periods while maintaining security by deleting information afterward.
Data Source
AI summary
A server includes an information storage portion, an application reception portion, and a transmission portion. The application reception portion receives a work application for work desired by a user. The transmission portion transmits identification information and work information of the user to a printing device. The printing device includes a storage portion, a user identification portion, a work hours determination portion, an end time determination portion, and a deletion portion. The storage portion stores information transmitted from the server. The user identification portion identifies the user that is logging in. The work hours determination portion determines whether the date and time of login is within work hours. The end time determination portion determines whether the current time is after the work end time. The deletion portion deletes information corresponding to the user from the storage portion when the current time is after the work end time.