Touchscreen Gesture Authentication for Mobile Devices

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Solution Overview

Problem

Mobile devices with touchscreens face security challenges due to the ease of accessing confidential information, especially for users with disabilities and those in distracting environments, as traditional virtual keypads are cumbersome and insecure.

Innovation Solution

A touch-based authentication method that recognizes tactile forces on a touchscreen without visual aids, allowing users to create and store unique gestures for unlocking the device, transforming it into an unlocked state based on these associations, while enabling secure access to applications and features.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a virtual keypad is used for authentication, then the device can be accessed, but the process becomes slow and cumbersome

Engineering Contradiction:

Improveauthentication processVSAvoidtime to unlock device

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces the mechanical interaction with a virtual keypad (touching small buttons) with a gesture-based system where users draw continuous patterns on the touchscreen. This substitution eliminates the need for precise button pressing and allows for faster, more natural authentication through sweeping motions.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The authentication system transitions from static button pressing to dynamic gesture drawing. Users create authentication patterns through continuous motion, allowing the system to recognize and validate gestures based on their dynamic characteristics such as speed, pressure, and trajectory, enabling faster authentication.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If a virtual keypad is used for authentication, then the device can be accessed, but it becomes inconvenient and dangerous when user attention is diverted

Engineering Contradiction:

Improveauthentication processVSAvoidsecurity when distracted

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system incorporates feedback mechanisms that guide users during the authentication process. The touchscreen provides visual feedback showing the gesture being drawn, allowing users to self-correct and complete authentication even when distracted, thereby maintaining security while improving ease of use.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If a virtual keypad is used for authentication, then the device can be accessed, but it is difficult for handicapped users to input information

Engineering Contradiction:

Improveauthentication processVSAvoidaccessibility for disabled users

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system allows for adjustable gesture parameters including size, speed, and complexity of authentication patterns. This flexibility enables users with different physical capabilities to authenticate using gestures that match their motor skills, whether they prefer large slow movements or smaller faster patterns.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If an alpha-numeric pass code is used, then security can be maintained, but it is difficult to remember for multiple users

Engineering Contradiction:

ImprovesecurityVSAvoidmemorability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system divides authentication into multiple gesture patterns, each associated with different users or access levels. Instead of one complex pass code that everyone must remember, each user has their own simplified gesture pattern, segmenting the authentication process into user-specific, easily memorable actions.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS8913028B2Mobile device authentication through touch-based gestures

Publication Date: 2014.12.16 CHIN DAVID H

AI summary

A method, system, and apparatus of a touch-based authentication of a mobile device through user generated pattern creation are disclosed. In one embodiment, a method of a mobile device includes recognizing a tactile force on a touch screen without a visual aid as an unlocking gesture, storing the unlocking gesture to a memory of the mobile device, associating another tactile force on the touch screen with the unlocking gesture, and transforming the mobile device from an initial state to an unlocked state based on the association between the another tactile force and the unlocking gesture. The method may include transforming the mobile device to operate as a telephonic communication device in the unlocked state.