Biometric Device Pairing via Body Movement Authentication

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Solution Overview

Problem

Existing device pairing methods for electronic devices, such as smartphones and wearables, are cumbersome and require manual confirmation, especially when devices are shared among multiple users, necessitating a more efficient and automated authentication process.

Innovation Solution

Implementing a circuitry in electronic devices that uses a privacy-preserving algorithm to authenticate by comparing body-related information, such as biometric and behaviometric data, to determine if devices are associated with the same body, allowing for frictionless pairing and secure data exchange.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual pairing confirmation is used, then device pairing can be securely established, but the pairing procedure becomes cumbersome and time-consuming

Engineering Contradiction:
Improvepairing securityVSAvoidpairing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs automatic authentication by comparing biometric data from multiple sensors (accelerometer, gyroscope, barometer) without requiring user intervention. The devices self-verify their association through algorithmic analysis of body movement patterns, eliminating the need for manual pairing confirmation while maintaining security.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical pairing operations with automated sensor-based biometric authentication. Instead of requiring users to physically confirm pairing through button presses or screen interactions, the system uses algorithms to analyze and compare body movement data from inertial sensors, substituting human action with automated computational verification.

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

2Reliability

If manual pairing confirmation is required, then unauthorized access can be prevented, but ease of operation deteriorates

Engineering Contradiction:
Improveaccess controlVSAvoidpairing convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The authentication process occurs automatically without user intervention. The devices autonomously collect biometric data from sensors, compare the data using privacy-preserving algorithms, and establish or deny pairing based on the analysis results, making the system both secure and convenient.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system performs authentication actions in advance of actual data transfer. By verifying device association through biometric comparison before any sensitive operations, the system ensures security is built into the foundation of the connection, eliminating the need for subsequent authorization steps.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If devices are shared among multiple users, then device versatility is improved, but authentication complexity increases

Engineering Contradiction:
Improvedevice shareabilityVSAvoidauthentication process
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces complex multi-user authentication protocols with simple biometric comparison. Instead of requiring users to manually log in, enter passwords, or go through multi-factor authentication, the system automatically compares sensor data from the current user's body movements with stored profiles, simplifying the authentication process while supporting multiple users.

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

Solution Approach 2:

The system changes the authentication parameter from manual credentials (passwords, PINs) to physiological parameters (body movement patterns, acceleration, gyroscope data). This parameter change enables automatic, contactless authentication that is both simpler to use and more difficult to spoof, accommodating multiple users without increasing complexity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3448078B1Electronic device, system and method for data communication
Publication Date: 2022.08.03 SONY GROUP CORP
  • EP3448078B1 patent drawingFigure 1
  • EP3448078B1 patent drawingFigure 2
  • EP3448078B1 patent drawingFigure 3

AI summary

The present disclosure relates to an electronic device which comprises a circuitry configured to authenticate a second electronic device when the circuitry detects based on a privacy preserving algorithm that the two electronic devices are associated with the same body. Furthermore, the present disclosure relates to a method comprising authenticating data communication between a first electronic device and a second electronic device when detecting based on a privacy preserving algorithm that the two electronic devices are associated with the same body.