Cross-Terminal Authentication Switching Using Telephone Number Changes
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Solution Overview
Problem
Existing authentication systems require users to re-authenticate when switching user terminals, compromising user convenience and security.
Innovation Solution
An authentication system that determines whether to change the registered telephone number based on change necessity/unnecessity information, switching between different authentication methods (first and second authentication) depending on the need to change the number, thereby improving user convenience and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication is performed using terminal-specific information, then security is improved, but user convenience deteriorates when switching terminals
Solution Approach 1:
The patent applies dynamics by making the authentication method adaptable rather than fixed. The system dynamically selects between terminal-specific authentication and telephone number-based authentication based on whether the user is switching terminals. This allows the authentication mechanism to flex between security-oriented and convenience-oriented modes, resolving the contradiction between maintaining security and ensuring ease of operation during terminal transitions
Solution Approach 2:
The patent changes the authentication parameter from terminal-specific information to telephone number information when terminal switching is detected. By changing the authentication basis from device-identifying parameters to user-identifying parameters (telephone number), the system maintains security while accommodating terminal changes, thus resolving the contradiction between security and user convenience
2Ease of operation
If no description authentication is performed from another user terminal, then user convenience is improved, but security becomes insufficient
Solution Approach 1:
The system dynamically adjusts the authentication requirement based on the authentication scenario. When terminal switching is detected, the system transitions from requiring terminal-specific authentication to accepting telephone number-based authentication, enabling no-description authentication. This dynamic adjustment allows the system to provide convenience when appropriate while maintaining security controls when needed
Solution Approach 2:
The patent introduces telephone number information as an intermediary that bridges terminal-specific authentication and user identity verification. The telephone number serves as a mediator that can verify user identity without being tied to specific terminal hardware, enabling convenient cross-terminal authentication while maintaining security through verified user identification
3Reliability
If authentication is switched based on terminal changes, then security is improved, but system complexity increases
Solution Approach 1:
The patent segments the authentication process into two distinct paths: terminal-specific authentication for initial/login scenarios and telephone number-based authentication for terminal switching scenarios. By dividing the authentication logic into separate, well-defined segments based on the authentication scenario, the system manages complexity through structured segmentation rather than a monolithic authentication system
Solution Approach 2:
The system performs preliminary detection of terminal switching before initiating authentication. By detecting terminal changes in advance and pre-determining the appropriate authentication method, the system avoids complex real-time decision-making during the authentication process itself, thereby reducing overall system complexity while maintaining security
Data Source
AI summary
Provided is an authentication system including at least one processor configured to: acquire change necessity/unnecessity information regarding whether to change a telephone number registered in a predetermined service when a login to the service is performed from a second user terminal different from a first user terminal after a login to the service was performed from the first user terminal; and switch an authentication to be executed from the second user terminal based on the change necessity/unnecessity information.