Touchscreen Unlocking Method Combining Symbol and Direction Inputs

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Solution Overview

Problem

Existing electronic devices face challenges in securely unlocking mechanisms, as they often rely solely on symbol-based passwords, which can be easily compromised, leading to accidental or unauthorized access.

Innovation Solution

An unlocking method that requires both symbol information and direction information matching predefined conditions, using a touch screen interface to display candidate symbols and determine the unlocking direction through user input, thereby enhancing security by requiring dual authentication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If symbol-based password is used for unlocking, then ease of operation is improved, but security is worsened

Engineering Contradiction:
Improveease of unlockingVSAvoidsecurity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent combines symbol-based authentication with gesture-based authentication into a unified unlocking mechanism. The system requires both a correct symbol selection and a matching gesture direction (first direction and second direction) to unlock, thereby enhancing security while maintaining ease of operation for authorized users.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent adds a new dimension of gesture direction to the traditional symbol-based password system. Instead of only requiring symbol input, the system now incorporates directional gestures (first direction and second direction) as an additional authentication layer, transforming the unlocking process from one-dimensional symbol entry to multi-dimensional input.

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

2Reliability

If dual authentication (symbol and direction) is required, then security is improved, but device complexity is worsened

Engineering Contradiction:
ImprovesecurityVSAvoidunlocking mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The touch screen interface serves multiple functions: displaying candidate symbols, detecting user gestures, determining gesture directions, and validating both symbol and direction inputs. This multi-functionality reduces the need for separate hardware components, thereby managing complexity while enhancing security.

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

Data Source

PatentUS9213824B2Electronic device and unlocking method thereof
Publication Date: 2015.12.15 WISTRON CORP
  • US9213824B2 patent drawing
  • US9213824B2 patent drawing
  • US9213824B2 patent drawing

AI summary

An electronic device and an unlocking method thereof are provided. The electronic device has a touch screen, and the unlocking method includes following steps. When the electronic device is at a locking state, a first input and a second input corresponding to each other are received. Symbol information displayed on the touch screen is obtained according to the first input, and direction information is obtained according to the second input. When the symbol information and the direction information are matched to a predefined unlocking condition, the electronic device is switched to an unlocking state. When the symbol information and the direction information are not matched to the predefined unlocking condition, the electronic device is maintained in the locking state.