Vehicle Deauthorization Based on Distance Thresholds
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Solution Overview
Problem
Existing vehicle control systems lack effective mechanisms to prevent unauthorized access and control when the user device is out of range or not communicating with the vehicle, potentially allowing unauthorized users to operate the vehicle.
Innovation Solution
A system that suspends and deauthorizes user devices based on distance thresholds and communication status, requiring valid user inputs to reauthorize access and prevent unauthorized operation by monitoring location data and communication status, and deactivating user devices that fail to maintain communication or provide valid inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vehicle control system allows user device access without strict authentication monitoring, then ease of operation is improved, but security against unauthorized access deteriorates
Solution Approach 1:
The system performs preliminary authentication by verifying the user device is within threshold distance before allowing vehicle control operations. This pre-check prevents unauthorized access attempts by devices that should not have access, while still maintaining ease of operation for authorized users who simply need to be near their vehicle.
Solution Approach 2:
The system continuously monitors communication status and distance between the user device and vehicle, providing real-time feedback to determine whether to maintain or revoke access authorization. This ongoing verification ensures security without significantly impacting ease of operation for legitimate users.
2Object-affected harmful factors
If the system implements continuous authentication monitoring, then security is improved, but device complexity increases
Solution Approach 1:
The authentication monitoring is applied locally and selectively - the system checks whether the user device is within a specific distance threshold and whether communication is active, rather than implementing complex global authentication protocols. This localized approach provides effective security while minimizing system complexity.
Solution Approach 2:
The system uses simple parameter changes (distance threshold, communication status) to determine authentication state, rather than implementing complex cryptographic protocols. By monitoring basic parameters like GPS distance and communication connectivity, the system achieves security with minimal added complexity.
3Object-affected harmful factors
If the system deauthorizes user devices that are out of range, then security is improved, but ease of operation deteriorates
Solution Approach 1:
The authorization status is dynamic rather than static - the system continuously updates whether the user device is authorized based on current distance and communication status. This allows authorized users to maintain access when near their vehicle while automatically preventing remote access when away, balancing security with operational ease.
Solution Approach 2:
The system takes preliminary anti-action by deauthorizing devices that move beyond the threshold distance before unauthorized control can occur. By proactively revoking access based on distance monitoring, the system prevents remote exploitation while maintaining convenient access for users who remain near their vehicle.
Data Source
AI summary
Authorization of a user device is suspended based on determining, for a first predetermined time, a distance between the user device and a vehicle is greater than a threshold distance. Then a user input specifying a vehicle parameter is requested. Upon receiving the user input, the user input is validated based on the user input matching a stored vehicle parameter. The user device is deauthorized based on a) failing to receive a valid user input within a second predetermined time, or b) receiving a number of invalid user inputs equal to a threshold number.