User-Defined Image Authentication Sequence for Mobile Security

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Solution Overview

Problem

The integration of biometric identifiers in mobile-based multi-factor authentication is hindered by hardware and storage requirements, discouraging manufacturers and developers despite their security benefits.

Innovation Solution

A computer-implemented system and method that facilitates two-factor authentication using a user-defined image, where the user selects portions of their face in a specific sequence, leveraging a digital camera and touchscreen display to authenticate identity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If biometric identifiers are integrated into mobile-based multi-factor authentication, then security is improved, but hardware and storage requirements increase

Engineering Contradiction:
ImprovesecurityVSAvoidhardware and storage requirements
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent uses a digital image copy of the user's face captured by a standard camera instead of requiring specialized biometric hardware. The authentication is performed by analyzing pixel data from this image copy, allowing biometric-style authentication using only a digital camera and processor already present in mobile devices.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent replaces physical biometric hardware with a software-based image processing system. Instead of using fingerprint sensors, iris scanners, or other dedicated biometric devices, the system uses standard camera capture combined with digital image analysis algorithms to achieve authentication.

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

2Reliability

If biometric identifiers are integrated into mobile-based multi-factor authentication, then security is improved, but manufacturing costs increase

Engineering Contradiction:
ImprovesecurityVSAvoidmanufacturing costs
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent employs a disposable approach by using a single captured digital image for authentication rather than requiring expensive, durable biometric hardware components. The image is processed once for authentication purposes, eliminating the need for costly reusable biometric sensors.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

By using a digital photograph as the authentication medium instead of physical biometric hardware, the patent dramatically reduces manufacturing costs. The digital image copy can be stored and processed without requiring expensive specialized components.

Inventive Principle:
Principle #26Copying

3Reliability

If sequential portion selection from digital image is implemented, then authentication security is improved, but user operation complexity increases

Engineering Contradiction:
Improveauthentication securityVSAvoiduser operation complexity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent divides the authentication process into sequential steps where the user selects multiple distinct portions of their face in a specific order. This segmentation of the authentication process into discrete selection steps enhances security by making it more difficult to authenticate automatically, while the touchscreen interface keeps each individual selection simple.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces dynamic interaction by requiring sequential selections rather than a single static input. The user must interact with the image multiple times in sequence, creating a dynamic authentication process that adapts to user input while maintaining simplicity through the touchscreen interface.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10896248B2Systems and methods for authenticating user identity based on user defined image data
Publication Date: 2021.01.19 THE TORONTO DOMINION BANK
  • US10896248B2 patent drawing
  • US10896248B2 patent drawing
  • US10896248B2 patent drawing

AI summary

The disclosed embodiments include computerized methods and systems that facilitate two-factor authentication of a user based on a user-defined image and information identifying portions of the image sequentially selected by the user. In one aspect, a communications device presents a first digital image of a first user on a touchscreen display. The communications device may receive, from the first user, information identifying portions of the first digital image selected in accordance with a candidate authentication sequence established by the first user. The selected first image portions may, for example, be associated with corresponding facial features of the first user. The communications device may determine whether the candidate authentication sequence matches a reference authentication sequence associated with the first digital image, and may authenticate an identity of the first user, when the first selection sequence is determined to match the second selection sequence.