Bluetooth Verification for Vehicle Access Security
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Solution Overview
Problem
Wireless communication systems in vehicles face security issues due to unauthorized devices mimicking authorized fobs or devices, allowing thieves to gain access and start vehicles.
Innovation Solution
A wireless communication system for vehicles that includes a control unit with transceivers for key fobs and Bluetooth-enabled devices, a memory for correlating paired fobs with devices, and a method for selective access to vehicle functions based on proximity, enhancing security through pairing and authentication processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication systems are used for vehicle access control, then convenience and remote access capability are improved, but security vulnerability to unauthorized access increases
Solution Approach 1:
The patent segments the authentication process into multiple independent verification steps: first verifying the key fob's presence and validity, then separately verifying the Bluetooth device's presence and pairing status, and finally cross-referencing both identifications against stored pairing data. This multi-layered segmentation ensures that unauthorized access requires compromising multiple independent security layers simultaneously.
Solution Approach 2:
The patent introduces an intermediary verification mechanism where the control unit acts as a mediator between the key fob and Bluetooth device. It stores pairing data that correlates specific key fobs with specific Bluetooth devices, and uses this intermediary data structure to validate whether the combination of detected devices represents an authorized pairing, thereby preventing unauthorized access even if individual components are compromised.
2Reliability
If multiple authentication methods are implemented, then security is improved, but system complexity increases
Solution Approach 1:
The patent merges the key fob authentication system with the Bluetooth device authentication system into a unified access control mechanism. Instead of operating as separate systems, both authentication methods are integrated so that they work together synergistically - the control unit simultaneously monitors both RF signals from key fobs and Bluetooth signals from paired devices, combining their verification results to make access decisions. This merging reduces overall system complexity compared to maintaining entirely separate authentication systems.
Solution Approach 2:
The control unit is designed with multi-functionality, serving both as an RF receiver for key fobs and as a Bluetooth communicator for device pairing verification. The same control unit that manages traditional key fob authentication also handles Bluetooth device identification and pairing validation, eliminating the need for separate dedicated hardware systems and reducing overall system complexity while maintaining enhanced security through multiple authentication methods.
Data Source
AI summary
The present disclosure provides methods for using a Bluetooth device for interacting with a key fob and vehicle controller. The Bluetooth device can be used in combination with the key fob to increase the security of access to vehicle functions such as passive start, door and window locking, unlocking, closing, and opening. The Bluetooth device can also be used in conjunction with the key fob to access data from vehicle control system, and to authenticate additional key fobs.