Sensorimotor Control Loop Model for User Identity Detection

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Solution Overview

Problem

Current security measures for electronic devices lack effective methods to reliably authenticate users and detect fraudulent activities, particularly in scenarios where traditional username and password combinations are insufficient, such as in online banking or remote access applications.

Innovation Solution

The system employs a sensorimotor control loop model to monitor and analyze pointing device dynamics and gestures, estimating user-specific parameters that characterize motor-control traits, allowing for continuous user authentication and fraud detection by distinguishing between genuine and fraudulent users based on unique motor-control patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional username and password authentication is used, then user authentication can be performed, but security is insufficient to reliably detect fraudulent activities

Engineering Contradiction:
Improveauthentication reliabilityVSAvoidauthentication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical authentication systems (username/password entry) with a sensorimotor control loop model that analyzes unconscious motor behaviors. This substitution captures physiological motor control patterns through pointing device dynamics, providing more reliable fraud detection since these patterns are difficult to replicate consciously, while avoiding the complexity of multiple authentication factors.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an intermediary layer between authentication verification and user interaction. The sensorimotor control loop model acts as a mediator that continuously analyzes pointing device dynamics and motor behaviors without disrupting the user experience. This intermediary provides enhanced security through unconscious behavior analysis while maintaining simple user interaction.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If sensorimotor control loop model is implemented, then user authentication reliability is improved, but system complexity increases

Engineering Contradiction:
Improvefraud detection accuracyVSAvoidmonitoring and analysis system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The sensorimotor control loop model performs self-service by automatically capturing and analyzing motor control patterns without requiring explicit user participation. The system continuously monitors pointing device dynamics and gestures, extracting authentication features from unconscious behaviors naturally exhibited during task performance, eliminating the need for separate authentication actions from the user.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent implements preliminary action by establishing the sensorimotor control loop model during initial system setup or first use. The model is trained on user-specific motor control patterns and stored for future authentication comparisons. This preliminary characterization enables rapid, reliable fraud detection in subsequent sessions without requiring complex real-time analysis infrastructure.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If continuous monitoring of pointing device dynamics is performed, then authentication accuracy is improved, but processing time and computational resources increase

Engineering Contradiction:
Improvemotor-control pattern detection precisionVSAvoidauthentication processing time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent applies partial action by selectively monitoring specific pointing device dynamics and gestures that are most discriminative for authentication. Rather than analyzing all possible motor behaviors continuously, the system focuses on key sensorimotor parameters such as pointing accuracy, movement smoothness, and gesture patterns. This selective monitoring maintains high detection precision while reducing computational overhead and processing time.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The system performs preliminary characterization of user motor control patterns during initial sessions, storing these profiles for rapid comparison during authentication. This pre-computed baseline enables fast fraud detection by comparing current sensorimotor measurements against stored profiles using efficient similarity metrics, minimizing real-time processing requirements while maintaining high measurement precision.

Inventive Principle:
Principle #10Preliminary action

4Reliability

If user-specific parameters are stored in database, then fraud detection capability is improved, but data storage requirements increase

Engineering Contradiction:
Improveuser identification reliabilityVSAvoidstored biometric data quantity
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent extracts only the essential sensorimotor control parameters needed for authentication from the full set of possible motor behaviors. The system identifies and stores key features such as pointing device dynamics characteristics, gesture patterns, and motor control loop parameters that uniquely identify users. This extraction of critical authentication features reduces data storage requirements while maintaining high user identification reliability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system transforms raw sensorimotor measurements into compressed parameter representations suitable for storage and comparison. By converting continuous motor control data into discrete authentication features and parameters, the patent reduces the quantity of stored data while preserving the essential information needed for reliable fraud detection. Parameter transformation enables efficient storage and rapid comparison operations.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9541995B2Device, method, and system of detecting user identity based on motor-control loop model
Publication Date: 2017.01.10 BIOCATCH
  • US9541995B2 patent drawing
  • US9541995B2 patent drawing
  • US9541995B2 patent drawing

AI summary

Device, system, and method of detecting identity of a user based on motor-control loop model. A method includes: during a first session of a user who utilizes a pointing device for interacting with a computerized service, monitoring the pointing device dynamics and gestures of the user; based on the monitored dynamics and gestures, estimating parameters that characterize a sensorimotor control loop model of the user; storing in a database a record indicating that the user is associated with the parameters that characterize the sensorimotor control loop model of the user.