Dual-Device Authentication Using Biometric Code Pairing

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Solution Overview

Problem

The security of username and password combinations is compromised by theft, and not all devices support biometric authentication methods.

Innovation Solution

A system and method for password-free authentication using a first device to generate a unique code, displayed on the first device, and validated on a second device, which can include biometric authentication on the second device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If username and password authentication is used, then user access is enabled, but security is compromised due to password theft

Engineering Contradiction:
Improveauthentication securityVSAvoidpassword theft
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the authentication verification process from the first device and relocates it to the second device. The first device only generates and displays a unique code, while the second device performs the actual authentication validation, separating the code generation function from the security verification function to enhance overall system security

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a unique code as an intermediary element between the user and the authentication system. This code serves as a temporary credential that bridges the user's identity on the first device with the authentication verification on the second device, eliminating the need for direct password transmission

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If biometric authentication is implemented, then password security is improved, but device compatibility is reduced as not all devices support biometrics

Engineering Contradiction:
Improveauthentication securityVSAvoiddevice compatibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent creates a universal authentication mechanism that works across different device types regardless of their native authentication capabilities. The system allows a user to initiate authentication on any device (first device) and complete it on another device (second device) that has biometric capabilities, making the authentication system adaptable to diverse device configurations

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

Solution Approach 2:

The patent divides the authentication process into separate stages that can occur on different devices. The code generation stage happens on the first device, while the authentication verification stage occurs on the second device, allowing each device to perform only the functions it is capable of

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If a unique code system is implemented, then password-free authentication is achieved, but additional devices are required for authentication

Engineering Contradiction:
Improvepassword-free authenticationVSAvoidmulti-device requirement
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent enables the user's existing mobile device to serve dual purposes: it acts as both the authentication verification device and the user's personal security credential. The authentication app on the user's mobile device leverages the device's existing biometric capabilities, allowing the device to authenticate itself as a trusted credential holder without requiring additional hardware

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12579249B2Systems and methods for authentication
Publication Date: 2026.03.17 TRUIST BANK
  • US12579249B2 patent drawing
  • US12579249B2 patent drawing
  • US12579249B2 patent drawing

AI summary

A system and method for a password-free authentication experience that further allows for dual-device authentication is described. The system allows a user to choose an alternative authentication method on a first device which includes the use of a unique code to couple the authentication process with a second device. The alternative authentication method may include the use of biometric authentication methods on the second device. Further the systems and methods allow a user to disable authentication methods for added security.