Dual-Password Terminal Login for Parent-Child Desktop Switching

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Solution Overview

Problem

Existing intelligent terminals face challenges in managing multiple user scenarios efficiently, particularly when parents and children share a device, as current methods for parental control are cumbersome and performance-intensive, especially when switching between user modes.

Innovation Solution

Implementing a method that allows two different user unlock passwords to access distinct system desktops within the same user space, eliminating the need for Android multi-user switching and reducing performance consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If different system modes are set on the tablet device to implement parental management and control, then parental control functionality is achieved, but switching between different system modes consumes relatively much performance of the tablet device

Engineering Contradiction:
Improveparental control functionalityVSAvoiddevice performance consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system is segmented into two distinct desktop environments (first desktop for parent, second desktop for child) within the same user space. Each desktop is configured with different application sets and access permissions, allowing the tablet to provide tailored functionality for different users without requiring full system mode switches. This segmentation enables parental control while reducing performance overhead compared to complete system mode transitions.

Inventive Principle:
Principle #1Segmentation

2Reliability

If different system modes are set on the tablet device to implement parental management and control, then parental control functionality is achieved, but the switching process is time-consuming and complex

Engineering Contradiction:
Improveparental control functionalityVSAvoidswitching time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The desktop is segmented into multiple accessible environments (first desktop and second desktop) that can be switched instantly through simple authentication (password or fingerprint). This eliminates the need for time-consuming system mode switching while maintaining distinct functional environments for parent and child, significantly reducing transition time and operational complexity.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If Android multi-user switching is implemented to manage different user scenarios, then multi-user functionality is achieved, but device performance consumption increases

Engineering Contradiction:
Improvemulti-user functionalityVSAvoiddevice performance consumption
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent merges multiple user environments (parent and child desktops) into a single user space rather than creating separate Android user profiles. This consolidation allows the system to maintain multi-user functionality with different applications and permissions while avoiding the performance overhead of full multi-user switching. The first and second desktops coexist in the same user space, sharing system resources efficiently.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP3961440B1Login method for intelligent terminal, and electronic device
Publication Date: 2026.01.28 HUAWEI TECH CO LTD
  • EP3961440B1 patent drawingFigure 1
  • EP3961440B1 patent drawingFigure 2(a)
  • EP3961440B1 patent drawingFigure 2(b)

AI summary

An intelligent terminal login method and an electronic device are provided. According to the method, for a scenario in which different users use a same intelligent terminal, different unlock passwords are provided for the users, and different processing is performed for the different unlock passwords by using different implementations, so as to meet use requirements of the different users. This avoids a cumbersome operation in a user switching process in an existing Android multi-user solution, and reduces performance consumption of an intelligent terminal. In addition, the method can implement user data interaction between different users in a same user space, and improve user experience.