Biometric Authentication Across Devices Without Server Data Exposure

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Solution Overview

Problem

Existing user biometric systems face security risks due to the potential hacking or exposure of biometric information, limiting their functionality and posing a threat to user privacy.

Innovation Solution

A user authentication system that stores biometric information only on a user's portable electronic device, using wireless communication and ultrasonic signals to authenticate users across different devices without storing raw data on external servers, ensuring secure and efficient authentication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If user biometric information is stored on a server, then authentication can be performed across multiple devices, but security risks increase due to potential hacking and personal information leakage

Engineering Contradiction:

Improveauthentication across devicesVSAvoidsecurity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent divides the authentication system into two parts: biometric template extraction and authentication verification. The extraction is performed locally on the user's device, while only encrypted authentication data is transmitted to the server. This segmentation ensures that sensitive biometric information remains on the user's device, reducing security risks while maintaining cross-device authentication capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary mechanism where the server stores only encrypted authentication results rather than raw biometric data. The encrypted data acts as a mediator that enables verification without exposing sensitive information, thus maintaining both security and authentication functionality across devices.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If manual manipulation is required for authentication, then security can be verified, but user convenience decreases and authentication time increases

Engineering Contradiction:

Improveauthentication verificationVSAvoiduser convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent implements self-service authentication by enabling the user's device to automatically extract biometric templates and perform authentication verification without requiring manual intervention. The device autonomously compares biometric data with stored templates and transmits authentication results, eliminating the need for users to manually input credentials while maintaining secure verification.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual authentication operations with automated biometric recognition systems. Instead of requiring users to manually enter passwords or PINs, the system uses automatic biometric data capture, template matching, and verification processes, thereby improving both convenience and speed while maintaining security through automated verification protocols.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If biometric information is transmitted to external devices, then authentication can be performed, but the risk of information exposure increases

Engineering Contradiction:

Improveauthentication functionalityVSAvoidinformation exposure risk

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts only the necessary authentication elements from the biometric information and transmits only encrypted authentication results to external devices. The raw biometric data remains on the user's device, while only verified authentication outcomes are transmitted, thereby reducing information exposure risk while maintaining authentication functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent transforms biometric information into encrypted authentication data before transmission. By changing the parameter state from raw biometric data to encrypted verification results, the system maintains authentication functionality while significantly reducing the risk of information exposure during transmission and storage.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12625938B2Electronic device for performing user authentication by using user biometric information, and operation method thereof

Publication Date: 2026.05.12 GHOST PASS INC

AI summary

The present invention relates to an electronic device for performing user authentication on a user by using user biometric information in response to a request made by a user authentication request device, wherein the user authentication request device transmits data obtained by sensing the body of a user adjacent thereto to the electronic device (a user authentication device) of the user to request user authentication, and receives authentication result data from the user authentication device.