In-Vehicle Continuous User Authentication for Function Restriction

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Solution Overview

Problem

Existing vehicle security systems do not adequately address the need for continuous user authentication during travel, particularly in the context of Zero Trust principles, leaving vehicles vulnerable to unauthorized access and potential misuse.

Innovation Solution

A user authentication method and system that authenticates a user at a first time point, enables vehicle functions based on the authenticated user, and continuously determines if the user remains the same during travel, with processes to restrict or stop functions if a different user is detected, including safety-related functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If continuous user authentication is implemented during vehicle travel, then security performance is improved, but system complexity increases

Engineering Contradiction:

Improvesecurity performanceVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system performs preliminary authentication of the first user before vehicle travel, establishing baseline authorization. During travel, it only needs to verify whether the current user matches the previously authenticated user, rather than performing full authentication protocols. This reduces real-time computational complexity while maintaining security.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The authentication system operates continuously during vehicle travel, constantly monitoring user identity. Rather than periodic checks, the system maintains continuous verification, ensuring security is upheld at all times without requiring complex intermittent authentication sequences.

Inventive Principle:

Principle #20Continuity of useful action

2Device complexity

If user authentication is performed only before travel, then system simplicity is maintained, but security vulnerabilities increase during travel

Engineering Contradiction:

Improveauthentication process complexityVSAvoidunauthorized access risk

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The system establishes a feedback mechanism where the authenticated user's identity is continuously verified during travel. The determiner compares the current user against the stored first user information, and the second controller adjusts system access based on this feedback. This creates a closed-loop security system that adapts to real-time conditions.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The authentication system transitions from a static pre-travel check to a dynamic continuous verification process. The system adapts its monitoring intensity and response actions based on whether the current user matches the authenticated user, enabling flexible security responses to changing conditions during travel.

Inventive Principle:

Principle #15Dynamics

3Reliability

If the system continuously monitors user identity during travel, then unauthorized access is prevented, but processing load increases

Engineering Contradiction:

Improveunauthorized access preventionVSAvoidprocessing load

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system performs partial authentication verification during travel by checking whether the current user matches the previously authenticated user, rather than performing complete authentication protocols. This partial verification approach provides sufficient security for the travel context while significantly reducing processing requirements.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250335564A1User authentication method, user authentication system, and recording medium

Publication Date: 2025.10.30 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

Provided is a user authentication method of authenticating a user in a vehicle. The user authentication method includes: authenticating a first user in the vehicle at a first time point; enabling a function of the vehicle according to the first user authenticated; determining whether a second user in the vehicle at a second time point after the first time point and during travel of the vehicle is a same person as the first user; and performing a process regarding restriction of the function enabled, according to a result of the determining of whether the second user is the same person as the first user.