Vehicle Authentication System for Car Sharing Security
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Solution Overview
Problem
Car sharing systems face challenges in preventing unauthorized use of vehicles, as existing systems lack robust authentication mechanisms, leading to potential theft and misuse.
Innovation Solution
A vehicle and terminal device system that performs user authentication by comparing identification information, locks the transmission in unauthorized states, and guides the vehicle to stop or reduce speed when authentication fails, using a communicator, controller, and display to manage user information and communication with a server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If simple authentication is used for car sharing, then ease of operation is improved, but reliability deteriorates due to unauthorized use and theft
Solution Approach 1:
The system performs preliminary authentication by comparing the terminal device's identification information with registered user information before allowing vehicle operation. This preliminary check ensures that only authorized users can operate the vehicle, resolving the contradiction by maintaining ease of operation while preventing unauthorized use through advance verification
2Reliability
If authentication mechanisms are added to prevent unauthorized use, then reliability is improved, but device complexity increases
Solution Approach 1:
The controller serves as an intermediary that automatically compares identification information between the terminal device and registered user information. This intermediary function implements reliable authentication without requiring complex user actions, resolving the contradiction by maintaining reliability while keeping the system simple from the user's perspective
Solution Approach 2:
The controller performs multiple functions including receiving identification information, comparing it with registered data, controlling transmission locking, and providing user guidance. By consolidating these authentication-related functions into a single controller, the system achieves reliable authentication without proportionally increasing overall device complexity
3Reliability
If transmission locking is implemented for unauthorized users, then reliability is improved, but ease of operation worsens due to operational restrictions
Solution Approach 1:
Instead of restricting unauthorized users directly, the system inverts the approach by enabling operation only for authenticated users. The controller compares identification information and selectively controls transmission locking, ensuring that reliable authentication is performed while maintaining ease of operation for legitimate users who experience no restrictions
Data Source
AI summary
A sharable vehicle is provided. The vehicle includes a storage that to stores registered user information and a communicator that communicates with a terminal device. A controller receives identification information of the terminal device from the terminal device when startup is performed. The controller unlocks a P stage of a transmission when it determined that the received identification information of the terminal device is the same as an identification number of the terminal device in the stored user information and locks a P stage of when it is determined that the received identification information of the terminal device is different from the identification number of the terminal device in the stored user information Additionally, the controller outputs authentication failure information of the terminal device and a display is configured to output the authentication failure information of the terminal device.


