Motion Fingerprint Pairing for Vehicle Device Authentication
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Solution Overview
Problem
Current mobile device and vehicle pairing methods require significant user involvement, especially when switching vehicles, as they rely on manual entry of passcodes, which is inconvenient and inefficient.
Innovation Solution
A method utilizing motion sensors in both vehicles and mobile devices to generate and compare motion fingerprints, allowing for automatic authentication of wireless connections based on similarity scores and driving maneuver intensity, thereby eliminating the need for user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual passcode entry is used for pairing, then authentication security is maintained, but user convenience and pairing speed deteriorate
Solution Approach 1:
The system performs authentication automatically by comparing motion fingerprints without requiring user intervention. The mobile device and vehicle independently generate motion fingerprints, exchange them via wireless communication, and automatically determine authentication based on similarity comparison, eliminating the need for manual passcode entry while maintaining security
Solution Approach 2:
The patent replaces the mechanical interaction of manual passcode entry with a sensor-based motion fingerprint comparison system. Motion sensors capture vehicle motion data, which is transformed into motion fingerprints and compared with device motion fingerprints through automated algorithms, substituting the manual authentication mechanism with an automated sensor-driven system
2Productivity
If repeated pairing is required when switching vehicles, then device-vehicle specific authentication is ensured, but time efficiency and user experience worsen
Solution Approach 1:
The system captures vehicle motion data and generates motion fingerprints in advance during normal vehicle operation. When a pairing request occurs, the pre-captured motion fingerprints are immediately available for comparison with the mobile device's motion fingerprint, enabling rapid authentication without requiring time-consuming data collection at the moment of pairing
3Extent of automation
If motion fingerprint comparison is implemented, then automatic authentication is achieved, but system complexity and processing requirements increase
Solution Approach 1:
The patent introduces motion fingerprints as an intermediary representation of vehicle motion characteristics. Instead of directly comparing raw motion sensor data which would be complex and high-dimensional, the system transforms motion data into compact motion fingerprint vectors that serve as intermediaries for comparison, simplifying the authentication process while maintaining accuracy
Solution Approach 2:
The system transforms physical motion parameters (acceleration, velocity, position from motion sensors) into a different parameter space represented by motion fingerprints. This parameter transformation converts continuous, high-dimensional sensor data into discrete or reduced-dimensional fingerprint vectors that are easier to compare and process, reducing computational complexity
Data Source
AI summary
A vehicle includes a wireless transceiver, configured to communicate with a mobile device; a vehicle sensor, configured provide vehicle motion data; and one or more processors, configured to responsive to receiving an authentication request from the mobile device, send a request for a device motion fingerprint for a first timeframe to the mobile device, receive the device motion fingerprint from the mobile device, generate a vehicle motion fingerprint for the first timeframe using the vehicle motion data, responsive to a driving maneuver input intensity being greater than an input threshold, compare the vehicle motion fingerprint with the device motion fingerprint to generate a similarity score, and responsive to the similarity score being indicative of at least a predefined threshold level of similarity between the vehicle motion fingerprint and the device motion fingerprint, authenticate a wireless connection between the mobile device and the vehicle via the wireless transceiver.