Vehicle Key Fob Motion Pattern Authentication

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Solution Overview

Problem

Existing methods for identifying a person carrying an identification transmitter for a motor vehicle do not ensure secure authorization, as successful identification can occur independently of the person, allowing unauthorized use and potential theft.

Innovation Solution

A method that uses movement sensors to measure and process unique movement patterns, comparing them with stored patterns to authenticate the person carrying the transmitter, allowing only authorized individuals to access the vehicle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If code exchange identification method is used, then identification process is simple, but security is compromised as unauthorized persons can misuse the transmitter

Engineering Contradiction:
Improveidentification process simplicityVSAvoididentification security
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The identification process is segmented into two independent components: code exchange verification and movement pattern verification. Both components must be satisfied simultaneously for successful authentication, dividing the security check into multiple layers that must both pass

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Movement pattern data serves as an intermediary verification layer between the code exchange and final authentication decision. The system captures, processes, and compares movement patterns as an intermediate step to validate that the person holding the transmitter is authorized

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If movement pattern verification is added, then identification security is improved, but device complexity increases

Engineering Contradiction:
Improveidentification securityVSAvoidsystem structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The control device is designed to perform multiple functions: traditional code exchange authentication, movement pattern capture, movement pattern processing, and combined verification. This multi-functionality allows the system to maintain security while avoiding the need for entirely separate authentication systems

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The code exchange mechanism and movement pattern verification are merged into a single integrated authentication process. Both verification methods work together simultaneously, with the control device evaluating both the exchanged code and the captured movement pattern to make the final authentication decision

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If movement data processing is performed, then personalized identification is achieved, but processing time and energy consumption increase

Engineering Contradiction:
Improveperson-specific identification accuracyVSAvoididentification processing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system processes movement data to the necessary degree for accurate identification without performing unnecessary additional processing. The movement pattern is processed into characteristic features that are sufficient for reliable comparison, avoiding excessive computation that would waste time and energy

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

Movement patterns from authorized users are captured and stored in advance during setup or previous uses. When authentication is needed, the system compares current movement data against these pre-stored patterns, eliminating the need for complex real-time pattern generation and reducing processing time during actual authentication events

Inventive Principle:
Principle #10Preliminary action

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 approach enhances security by ensuring only authorized persons can access and operate the vehicle, minimizing misuse and theft, while also enabling personalized vehicle settings for enhanced comfort.

Implementation Method 1

the identification transmitter having at least one movement sensor, in particular an acceleration sensor and/or a position sensor

Methodology Applied
Scientific EffectAcceleration sensing: Accelerometer

Data Source

PatentEP3578426B1Method for identifying a person for use in a motor vehicle
Publication Date: 2023.03.29 HUF HÜLSBECK & FÜRST GMBH & CO KG
  • EP3578426B1 patent drawingFigure 1
  • EP3578426B1 patent drawingFigure 2

AI summary

The invention relates to a method for identifying a person operating an identification transmitter (1) for use in a motor vehicle (10), wherein the motor vehicle (10) has at least one control unit (11), wherein the identification transmitter (1) has at least one motion sensor (3), in particular an acceleration sensor and/or a position sensor, at least one battery (2) and at least one transmitting device (6), wherein the method comprises at least the following steps: - measuring motion data of the person operating the identification transmitter (1) by means of the motion sensor (3); - recording the motion data by means of at least one storage unit (4); - processing the motion data into a characteristic motion pattern (M1) by means of at least one processing unit (5); - comparing the processed motion pattern with at least one known stored motion pattern (M2) by means of at least one comparison unit (12).