NFC Card Key Access Control With Function-Specific Vehicle Permissions
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Solution Overview
Problem
Existing vehicle access systems lack effective measures to prevent theft when a card key is lost or stolen, and do not allow for granular control over vehicle functions, such as limiting or allowing specific functions like door unlock or engine start.
Innovation Solution
A card key system that includes a memory for storing authority information and a communication module for Near Field Communication (NFC) with a vehicle, allowing users to input changes to function permissions and expiration dates through a user terminal, enabling secure and customizable access to vehicle functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a card key system is implemented for vehicle access, then convenience of operation is improved, but security against theft when the card key is lost or stolen deteriorates
Solution Approach 1:
The card key system segments vehicle control into multiple independent functions (door unlock, engine start, trunk unlock). Each function can be independently authorized or restricted, allowing the system to provide convenient access while preventing unauthorized use of critical functions even if the card key is lost or stolen.
Solution Approach 2:
The authority information in the card key is made dynamic and changeable through NFC communication with a user terminal. Users can modify which functions are authorized on the card key in real-time, enabling the system to adapt security levels based on current needs while maintaining operational convenience.
2Ease of operation
If full access control is provided through the card key, then ease of operation is improved, but security control over specific functions deteriorates
Solution Approach 1:
The system divides vehicle access control into distinct functional segments (door unlock, engine start, trunk unlock). Each function can be independently authorized in the authority information, allowing granular control over specific functions while maintaining overall system convenience.
Solution Approach 2:
Different authorization levels are applied to different vehicle functions based on local needs. The authority information contains function-specific permissions that can be individually configured, allowing certain functions to be restricted while others remain accessible.
3Adaptability or versatility
If the card key stores comprehensive authority information, then adaptability of the system is improved, but device complexity increases
Solution Approach 1:
The card key is designed as a universal access device that can control multiple vehicle functions through a single NFC interface. The authority information structure is standardized to handle various functions (door unlock, engine start, trunk unlock) uniformly, reducing the need for separate control mechanisms for each function.
Solution Approach 2:
The NFC communication module acts as an intermediary between the card key, user terminal, and vehicle system. It handles the complex data exchange and authority verification processes, shielding the user from underlying system complexity while enabling comprehensive function control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively prevents unauthorized use of a lost or stolen card key by limiting or allowing specific vehicle functions based on stored authority information and expiration dates, enhancing security and user control over vehicle access.
Implementation Method 1
The card key communication module configured to transmit a signal for receiving the specific functions to a vehicle communication module
Data Source
AI summary
A card key for receiving specific functions from a vehicle is provided. The card key includes a card key memory configured to store authority information for controlling a specific functions of the vehicle; and a card key communication module configured to transmit a signal for receiving the specific functions to a vehicle communication module and the stored authority information. The card key communication module may be configured to receive information input to a user terminal from the user terminal. The stored authority information may be changed based on the input information.