Mobile Terminal Privacy Protection via Dynamic Password Segmentation
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Solution Overview
Problem
As mobile communication technologies advance, mobile terminals increasingly share privacy information when borrowed, leading to a higher risk of data leakage due to the lack of effective protection mechanisms beyond a single password.
Innovation Solution
Implementing a method in mobile terminals to dynamically enable or disable a protection mechanism for privacy information based on user access modes, allowing owners to set specific protection passwords for different categories of data, ensuring that privacy information is only accessible with the correct password in non-owner access modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If only one password is set for the mobile terminal, then the device is easy to operate and lend to others, but the privacy information becomes vulnerable to unauthorized access
Solution Approach 1:
The patent segments the single password system into multiple passwords with different access levels. The first password provides basic device access while the second password is required for sensitive operations like transferring contact lists, call logs, or messages. This segmentation allows the device to be easily lent for general use while protecting privacy-critical functions remain secure.
Solution Approach 2:
The patent applies different security qualities to different functions and data types within the mobile terminal. General device access operates with lower security requirements (first password), while specific privacy-sensitive operations (contact list transfer, message access) require higher security (second password). This local quality differentiation resolves the contradiction between ease of operation and privacy protection.
2Adaptability or versatility
If the mobile terminal is lent to others with password access, then social interaction is facilitated, but the risk of privacy information leakage increases
Solution Approach 1:
The patent implements preliminary anti-action by pre-configuring the second password protection mechanism for sensitive operations before the device is lent to others. The owner can anticipate potential privacy risks and preemptively set up the dual-password system, ensuring that even if the device is borrowed, unauthorized access to private information is blocked without affecting normal social sharing.
Solution Approach 2:
The patent introduces dynamic security control where the required password level changes based on the operation being performed. The system dynamically adjusts between first password (for general access) and second password (for sensitive operations) based on real-time operation detection, enabling flexible device sharing while maintaining adaptive privacy protection.
3Reliability
If multiple passwords are set for different access levels, then privacy protection is enhanced, but the device operation becomes more complex
Solution Approach 1:
The patent implements self-service by automatically detecting the type of operation being performed and requiring the appropriate password level without user intervention. The system autonomously determines whether a first or second password is needed based on the operation (general access vs. sensitive operation), eliminating the need for users to manually manage password complexity while maintaining strong privacy protection.
Solution Approach 2:
The patent changes the security parameter (password requirement level) based on the operation type. The system monitors operation parameters and dynamically adjusts the authentication requirement from first password to second password or vice versa, resolving the complexity issue by making password management transparent and automatic rather than manual and complex.
Data Source
AI summary
A method for protecting privacy information in a mobile terminal, including: granting, by the mobile terminal, user access according to an operation of a user, the granted access corresponding to the operation; enabling, by the mobile terminal, a protection mechanism set for the privacy information to be effective if the granted access does not include access to the privacy information; and disabling, by the mobile terminal, the protection mechanism set for the privacy information to be ineffective if the granted access includes access to the privacy information.