NFC Biometric Vehicle Unlocking via Local Token Verification
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Solution Overview
Problem
Existing methods for automating vehicle rental processes, such as those using NFC technology, face challenges with unreliable connections and the need for cloud verification, which can slow down the unlocking and locking of cars, and often require additional hardware like cameras or QR codes, making them inconvenient and prone to errors.
Innovation Solution
A system utilizing an NFC-enabled smartphone for biometric authentication to send a digital key to an automotive door module, which includes a microcontroller board with NFC capabilities and a relay shield to control the central locking system, allowing for secure and efficient unlocking and locking of vehicles without relying on cloud verification or additional hardware, using biometric authentication methods like facial recognition or fingerprint scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cloud verification is used for NFC authentication, then security is improved, but unlocking speed and efficiency deteriorate
Solution Approach 1:
The authentication system is segmented into two independent parts: local biometric verification (fast) and cloud-based authorization validation (secure). The NFC smartphone performs local facial recognition or fingerprint scanning immediately, while the vehicle's authentication module independently verifies pre-downloaded authorization tokens, eliminating the need for real-time cloud communication during unlocking.
Solution Approach 2:
Authorization tokens are downloaded and stored in the vehicle's authentication module in advance, before the user arrives. This preliminary action allows the system to perform fast local verification without needing to contact the cloud server during the actual unlocking process, thus maintaining both security and speed.
2Adaptability or versatility
If additional hardware like cameras or QR codes is added, then authentication capability is improved, but device complexity and ease of operation worsen
Solution Approach 1:
The NFC smartphone serves multiple functions: it acts as both the biometric sensor (facial recognition camera or fingerprint scanner) and the NFC communication device. The vehicle's authentication module similarly performs multiple roles: storing authorization tokens, verifying biometric data, and controlling the central locking system, eliminating the need for separate dedicated hardware for each function.
Solution Approach 2:
Instead of adding physical cameras or QR code scanners to the vehicle, the system uses the user's existing smartphone hardware for biometric capture and processes digital copies of biometric data through NFC communication. The authorization tokens are digital copies that replace physical key cards or remote fobs.
3Adaptability or versatility
If additional hardware is installed in vehicles, then authentication functionality is improved, but manufacturing cost and ease of manufacture worsen
Solution Approach 1:
The authentication module integrates multiple functions into a single device: biometric verification processing, NFC communication, and central locking control. This multi-functional design reduces the total number of components needed, simplifying the manufacturing process and reducing costs compared to installing separate dedicated hardware for each function.
Solution Approach 2:
The system merges the authorization server and token storage capabilities into the vehicle's existing infrastructure rather than adding separate cloud communication hardware. The authentication module combines biometric verification and locking control functions, reducing component count and manufacturing complexity.
4Extent of automation
If QR codes or barcodes are used for authentication, then cloud-based access control is achieved, but user convenience and productivity worsen due to manual scanning steps
Solution Approach 1:
The system replaces manual mechanical actions (scanning QR codes, aligning barcodes, pressing buttons) with automatic NFC communication and biometric recognition. The smartphone automatically establishes NFC connection when near the vehicle, and the system automatically verifies biometric data and triggers unlocking, eliminating all manual scanning steps.
Solution Approach 2:
The authentication process is fully automated without requiring user intervention beyond presenting the smartphone. The system automatically detects the NFC device, initiates biometric verification, validates authorization tokens, and triggers the locking mechanism without requiring the user to scan codes or enter passwords.
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 a secure, efficient, and automated method for controlling vehicle access, eliminating the need for cloud verification and reducing the risk of connection failures, while leveraging existing vehicle infrastructure to enhance user convenience and security.
Implementation Method 1
a NFC chip adapted to wirelessly connect to a NFC receiver module disposed within a body of the vehicle
Data Source
AI summary
Novel methods and devices for automatically unlocking a vehicle are provided, including a personal data device (“PDD”) adapted to wirelessly connect to an authentication module disposed within a body of the vehicle. The authentication module preferably includes a microcontroller board with wireless capabilities, a relay shield configured to send a signal to a central locking system of the vehicle, and a radio frequency transmitter connected to the relay shield. The PDD is configured for biometric authentication of a user. When the PDD is wirelessly connected to the authentication module, a signal is sent to the central locking system upon the automatic biometric authentication of the user. A PDD is disclosed including a near-field communication (NFC) chip adapted to wirelessly connect to an NFC receiver module disposed within a body of the vehicle. The PDD is configured to trigger sending a signal to the NFC receiver module to control a central locking system of the vehicle to unlock the vehicle. When the PDD is within NFC communication with the NFC receiver module, the NFC chip sends a signal to the central locking system upon the automatic biometric authentication of the user.