Vehicle QR Access Authentication Without a Key Fob
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Solution Overview
Problem
Conventional passive entry systems in vehicles limit access to authorized users only if they possess the key fob, preventing access when the fob is lost or unavailable.
Innovation Solution
A vehicle access system utilizing a telematics device, imaging device, and vehicle controller to authenticate a QR code generated by a portable electronic device, enabling access through cryptographic keys without a mechanical key or passive entry key fob, leveraging existing vehicle components like cameras and telematics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional passive entry system using LF RFID and UHF transceiver is used, then the system provides short to medium range communication and keyless access, but access is limited to users with physical possession of the key fob
Solution Approach 1:
The patent uses a QR code as a visual copy/representation of the security key, allowing the authentication data to be displayed on a portable electronic device screen rather than requiring a physical key fob. The imaging device captures this visual copy to perform authentication
Solution Approach 2:
The patent replaces the mechanical/radio-frequency key fob system with an optical/digital system. Instead of using LF RFID tags and UHF transceivers, the system uses QR code generation, display, and imaging for authentication, eliminating the need for specialized key fob hardware
2Reliability
If cryptographic key authentication with QR code is implemented, then secure access without key fob is achieved, but the system requires multiple components including telematics device, imaging device, and vehicle controller
Solution Approach 1:
The patent divides the authentication system into separate functional modules: a portable electronic device that generates and displays the QR code, a vehicle imaging device that captures the QR code, a telematics device that manages communication, and a vehicle controller that performs authentication. This segmentation allows each component to be optimized for its specific function
Solution Approach 2:
The QR code serves as an intermediary carrier of the security key information, bridging the gap between the portable electronic device and the vehicle authentication system. The telematics device acts as an intermediary for secure key distribution and management between the vehicle and external systems
Data Source
AI summary
A vehicle access system for a vehicle includes a telematics device disposed on the vehicle for communication with a portable electronic device via a network, the portable electronic device associated with the vehicle and configured to generate first and second security keys, and generate and display a QR code mapped from the first security key, the QR code configured to be authenticated by the second security key. An imaging device is disposed on the vehicle, and a vehicle controller is in signal communication with the telematics device and the imaging device. The vehicle controller is configured to perform operations including receiving the second security key to begin execution of an authentication process, detecting, with the imaging device, the QR code generated with the first security key, authenticating the QR code with the second security key, and upon authenticating the QR code, enabling access to a vehicle function.