Smart Key Function Sharing with Usage Restrictions
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Solution Overview
Problem
There is a demand for a method to securely share and control functions of a smart key, particularly in emergency situations, while preventing unauthorized access and ensuring that only authorized users can use the shared functions.
Innovation Solution
A device and method that include a communicator to receive and provide information about smart key functions, a controller to set usage restrictions, and a storage unit to manage these restrictions, allowing for conditions such as time limits, distance restrictions, user authorization, and function type limitations, ensuring secure and controlled access to the smart key functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If smart key functions are copied to another device, then the demand for emergency access is met, but unauthorized users may inadvertently control the vehicle
Solution Approach 1:
The patent segments the smart key functions by creating separate usage restrictions for different functions (locking, unlocking, starting, stopping). Each function can be independently controlled and restricted, allowing the owner to grant specific permissions to duplicate devices while maintaining security for other functions.
Solution Approach 2:
The patent applies local quality by setting different usage restrictions for different functions based on their security requirements. Critical functions like vehicle starting have stricter restrictions compared to less sensitive functions like door locking, allowing nuanced control over access permissions.
2Reliability
If usage restrictions are set for smart key functions, then unauthorized access is prevented, but the complexity of managing duplicate key functions increases
Solution Approach 1:
The patent creates a universal usage restriction management system that can be applied to multiple functions simultaneously. The controller and communicator work together to manage restrictions across all smart key functions through a unified interface, reducing the complexity of managing each function separately.
Solution Approach 2:
The system enables self-service by allowing the owner to easily set and modify usage restrictions through a user-friendly interface. The communicator automatically transmits these restrictions to duplicate devices, eliminating the need for manual configuration and reducing management complexity.
3Reliability
If multiple conditions are set for function usage, then security control is enhanced, but the difficulty of detecting and measuring compliance increases
Solution Approach 1:
The patent implements feedback by having the controller continuously monitor whether usage conditions are met before allowing function execution. The system provides real-time verification by checking location, time, and other conditions, and only permits function usage when all restrictions are satisfied, making compliance detection automated and reliable.
Data Source
AI summary
A device for providing information about a smart key for use in vehicles includes a communicator which receives information about at least one function, performed by the smart key, of controlling a vehicle; and a controller which sets a usage restriction for the at least one function. The communicator may provide information about the at least one function including the usage restriction to an external device.