Fingerprint App Launch Interface for Single-Step Secure Access

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Solution Overview

Problem

Computing devices require multiple authentication steps to access secure applications, which is inconvenient and time-consuming, and small fingerprint sensors limit user interaction during authentication.

Innovation Solution

A method using a single continuous finger engagement on an in-display fingerprint sensor to both authenticate the user and select a secure application, allowing for a swipe movement or directional contact to indicate the desired application, combining authentication and application launch into a single secure step.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple authentication steps are required to access secure applications, then security is improved, but user convenience and access speed deteriorate

Engineering Contradiction:
ImprovesecurityVSAvoiduser convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent combines multiple authentication steps and application selection into a single fingerprint authentication operation. The system displays multiple application icons on the lock screen, and a single fingerprint scan authenticates the user while simultaneously selecting the desired application through the authentication interface, eliminating the need for separate authentication and application launching steps.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The lock screen authentication interface is designed to serve multiple functions: it authenticates the user's identity, presents application selection options, and launches the selected application all within the same interaction flow. The fingerprint sensor serves both security authentication and application selection purposes, making the system more versatile and efficient.

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

2Reliability

If multiple authentication steps are required, then security is improved, but login time increases

Engineering Contradiction:
ImprovesecurityVSAvoidlogin time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent merges the authentication process and application launch process into a single unified operation. The fingerprint authentication simultaneously validates user identity and triggers the selected application to launch, reducing the total time required from multiple sequential steps to a single concurrent operation.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system prepares application icons and authentication options in advance on the lock screen before the user provides fingerprint input. This preliminary preparation allows the system to immediately launch the selected application as soon as authentication is complete, minimizing delays and reducing overall login time.

Inventive Principle:
Principle #10Preliminary action

3Use of energy by moving object

If a small fingerprint sensor is used, then device cost and battery consumption are reduced, but user interaction capability deteriorates

Engineering Contradiction:
Improvebattery consumptionVSAvoiduser interaction capability
Core Design Contradiction:
Use of energy by moving objectVSEase of operation

Solution Approach 1:

The small fingerprint sensor is designed to perform multiple functions: it authenticates user identity, detects the user's intended application selection through the authentication gesture, and triggers the application launch. This multi-functionality compensates for the limited physical size of the sensor by maximizing its operational capabilities.

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

Solution Approach 2:

The patent extends the interaction beyond the physical dimensions of the small fingerprint sensor by utilizing the touchscreen display area around the sensor for presenting application icons. The user's finger movement and gesture in the surrounding area, combined with the fingerprint scan, provide selection input, effectively expanding the interaction space without requiring a larger sensor.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP4172748B1Quick launcher user interface
Publication Date: 2026.04.01 QUALCOMM INC
  • EP4172748B1 patent drawingFigure 1A
  • EP4172748B1 patent drawingFigure 1B~1C
  • EP4172748B1 patent drawingFigure 2A~2B

AI summary

Methods executed by a processor of computing device for launching a selected application on a computing device are disclosed. Various embodiments may include authorizing a user based on a fingerprint of a finger detected on a fingerprint sensor portion of a touchscreen display matching a fingerprint of an authorized user of the computing device, determining a selected application installed on the computing device from a selective engagement of the finger on the touchscreen display, continuous from the fingerprint sensor portion, which provides an indication of a user selection of an application, and unlocking the selected application in response to the selective engagement of the finger on the touchscreen display. In some embodiments, selection of an application may be based a continuous swipe movement by the finger on the touchscreen display from the fingerprint sensor portion toward an icon on the touchscreen display representing the selected application.