Vehicle Security System Using Body-Conducted Signal Authentication
Solution Overview
Problem
Current vehicle communication systems face challenges in securely and efficiently pairing mobile electronic devices with vehicle networks, particularly in distinguishing authorized users and preventing unauthorized access, especially with the proliferation of external access applications and overlapping wireless networks.
Innovation Solution
A system utilizing a sensing electrode, such as a sensor pad, to detect the presence and characteristics of vehicle occupants through electric field coupling, enabling secure pairing of mobile devices with the vehicle network by transmitting a signal that can only be redistributed through the body, thus ensuring only authorized devices connect and access the network based on physical proximity and authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If remote pairing is allowed through Bluetooth or WiFi with extended acceptable distance, then convenience and comfort features are improved, but security risk increases due to potential unauthorized access
Solution Approach 1:
The patent introduces an intermediary authentication process using capacitive sensing technology as a mediator between the mobile device and vehicle network. The sensing electrode detects the user's presence and biometric characteristics through the seat, serving as an intermediate verification step before allowing network pairing. This intermediary mechanism enables remote pairing convenience while maintaining security by verifying the user's physical presence and identity through biometric data captured during the authentication process.
2Reliability
If initial setup process is required for each user and device, then access control is improved, but time consumption increases
Solution Approach 1:
The patent implements preliminary action by capturing and storing the user's biometric data (such as fingerprint, facial recognition, or other physiological characteristics) during the initial authentication process. This biometric template is stored securely in the vehicle's system. During subsequent pairing operations, the system performs rapid biometric verification instead of requiring full re-authentication, thereby maintaining strong access control while significantly reducing the time required for device pairing.
Solution Approach 2:
The patent uses copying by creating a digital replica or template of the user's biometric characteristics during initial setup. This biometric copy is stored and used for rapid verification in future pairing operations. Instead of requiring the user to repeatedly enter passwords or go through full authentication sequences, the system compares the newly captured biometric data against the stored copy, enabling quick and secure pairing while maintaining access control integrity.
3Adaptability or versatility
If multiple electronic devices are supported simultaneously, then versatility is improved, but difficulty of detecting authorized devices increases
Solution Approach 1:
The patent applies segmentation by dividing the authentication process into distinct segments: physical presence detection via capacitive sensing, biometric data capture, device identification, and network pairing authorization. Each segment handles a specific aspect of the authentication process. This segmented approach allows the system to manage multiple devices simultaneously by processing each device's authentication through discrete, manageable steps, reducing the complexity of verifying authorization across multiple concurrent pairing operations.
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
This solution provides enhanced security and convenience by ensuring only authorized devices connect to the vehicle network, preventing unauthorized access while allowing personalized communication modes based on user location and vehicle events, such as emergency calls during collisions.
Implementation Method 1
A system utilizing a sensing electrode, such as a sensor pad, to detect the presence and characteristics of vehicle occupants through electric field coupling
Implementation Method 2
A sensing electrode disposed within a vehicle seat and in communication with a vehicle communication bus may detect a signal transmitted from a mobile electronic device through an occupant of the vehicle seat
Data Source
Figure 1~2
Figure 3
AI summary
A system for controlling access of a mobile electronic device to a vehicle network includes a body area network for carrying signals through an occupant of a vehicle. The network includes an electrode located in proximity to an occupant of the vehicle and, a signal generator for providing a signal to the electrode. The mobile electronic device is configured to detect the signal provided to the electrode and conducted through the body area network and is configured to electronically couple to the vehicle network upon detecting the signal. The vehicle network is configured to provide a security token to the mobile electronic device after the mobile electronic device is electronically coupled to the vehicle network. The vehicle network is configured to restrict access to the network to only mobile electronic devices having the provided security token.