Portable Device Lock Function with Dual Unlocking Conditions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lock functions on portable devices, such as mobile phones, lack a limit on the number of password attempts, making them insecure as anyone can unlock the device by trying every possible password.
Innovation Solution
Implementing a protection setting method that adds a second unlocking condition to lock functions, which requires a specific action or condition to be met in addition to the password entry, such as pressing a function key after entering the password, thereby increasing security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lock function with no limit on password attempts is used, then ease of operation is improved, but security level deteriorates
Solution Approach 1:
The unlocking process is segmented into multiple independent conditions: the first unlocking condition (correct password) and the second unlocking condition (protection condition such as pressing function key within specific time range). Both conditions must be satisfied sequentially, dividing the single security check into multiple stages to prevent brute-force attacks while maintaining user convenience.
Solution Approach 2:
The protection condition (second unlocking condition) is set in advance as a preliminary requirement before the device can be unlocked. The system pre-configures time ranges for function key presses or other protective actions that must occur within specific windows during the unlocking process, preventing unauthorized access even if the password is compromised.
2Reliability
If a protection condition is added to the lock function, then security level is improved, but device complexity increases
Solution Approach 1:
The system automatically manages the protection conditions through self-service mechanisms. The controller detects function key presses, automatically determines whether they fall within the predefined time ranges, and validates conditions without requiring additional user configuration or complex external systems. The device serves itself by monitoring its own state and enforcing security rules.
Solution Approach 2:
The lock function is enhanced with multi-functionality by integrating multiple unlocking conditions into a single unified system. The same controller that handles password verification also manages protection condition validation, function key detection, and time range verification, allowing one component to perform multiple security-related functions without proportionally increasing overall system complexity.
Data Source
AI summary
The present invention provides a protection setting method and a protection releasing method for a portable device. The protection setting method comprises: selecting a lock function having a first unlocking condition, displaying a protection condition list including a plurality of protection conditions, selecting a protecting condition from the plurality of protecting conditions, and further setting the selected protection condition as a second unlocking condition for the lock function. When the portable device is locked, the protection releasing method comprises: displaying a password input window for entering a first unlocking input, detecting a second unlocking input, verifying whether the second unlocking input matches with the second unlocking condition, and verifying whether the first unlocking input matches with the first unlocking condition.