Portable Terminal App Security by Location and Access Level
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Solution Overview
Problem
Existing portable terminal devices face challenges in balancing user usability and security strength, particularly in password authentication, where long and complex passwords reduce usability, and location-based authentication may not adequately secure sensitive information from unauthorized access.
Innovation Solution
A portable terminal device that sets a security level for each application based on location, allowing quick execution of low-security applications without authentication and requiring authentication for high-security applications, with options to limit application use and switch security levels based on location, time, and user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a long and complicated password is used to enhance security strength, then security strength is improved, but usability deteriorates because the user must type keys many times
Solution Approach 1:
The patent applies local quality by differentiating security requirements for different applications based on their sensitivity. High-security applications (e.g., email, financial apps) require authentication, while low-security applications (e.g., weather, calendar) do not. This localized differentiation resolves the contradiction by allowing users to access frequently used non-sensitive apps quickly without authentication, while maintaining security for sensitive apps.
Solution Approach 2:
The patent segments applications into multiple categories based on security levels (high-security and low-security applications). This segmentation allows the system to apply different authentication policies to different segments, enabling quick access to low-security apps while maintaining security measures for high-security apps, thus balancing usability and security strength.
2Ease of operation
If location-based authentication is used to improve usability, then ease of operation is improved, but security strength deteriorates because sensitive information may be accessed by family members or colleagues
Solution Approach 1:
The patent applies local quality by differentiating security policies based on application sensitivity rather than uniformly applying location-based authentication. Even at home or workplace locations, the system maintains authentication requirements for high-security applications, preventing unauthorized access by family members or colleagues while still allowing quick access to low-security applications.
3Reliability
If all applications require authentication to ensure security, then security strength is improved, but usability deteriorates because the user must authenticate for every application
Solution Approach 1:
The patent applies local quality by differentiating authentication requirements based on application security levels. Low-security applications (e.g., weather, calendar, notes) can be accessed without authentication, providing quick usability, while high-security applications (e.g., email, financial apps) require authentication to maintain security strength.
Solution Approach 2:
The patent segments applications into high-security and low-security categories, applying different authentication policies to each segment. This segmentation enables the system to provide unrestricted access to low-security apps for improved usability while maintaining authentication for high-security apps to ensure security strength.
Data Source
AI summary
A portable terminal device sets a security level for each application in accordance with position, and stores the level in a memory. The security level determines whether each application is displayed or made executable on a display portion in locked state and unlocked state. A controller refers to the security level and determines the application displayed on the display portion in accordance with position information acquired by a position information acquisition unit (GPS reception unit), and makes executable the application selected by the user. Thus, the portable terminal device offers user-friendliness while ensuring security strength.