Visual Encryption for Display Privacy via Gesture-Based Segmentation
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Solution Overview
Problem
As terminal devices with increasing display sizes are used for business transactions, there is a risk of exposing critical user information, compromising personal privacy, and existing security measures are inadequate in protecting this information through visual encryption methods.
Innovation Solution
A security apparatus and method that uses an encryptor to visually encrypt target objects on a display based on user gestures, such as touch, sliding, or drag gestures, mixing noise objects with the target objects, and a decryptor that decrypts the encrypted area upon specific gestures during a predetermined period, allowing users to control the encryption and decryption of sensitive information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display size is increased to improve visibility and user experience, then the display quality and user interface are improved, but the risk of information exposure increases and security is worsened
Solution Approach 1:
The display screen is divided into multiple regions: an encrypted region displaying scrambled content and a decrypted region displaying clear content. This segmentation allows the display to simultaneously provide high-quality visual output while protecting sensitive information through spatial separation of encrypted and decrypted content areas.
Solution Approach 2:
The system dynamically adjusts the position, size, and content of encrypted and decrypted regions based on user interactions such as gaze detection, touch gestures, or voice commands. This dynamic reconfiguration allows the display to adapt to different security requirements and user needs in real-time, maintaining both display quality and security.
2Reliability
If visual encryption is applied to protect sensitive information, then security is improved, but the ease of accessing information is worsened
Solution Approach 1:
Instead of encrypting the entire display, the system applies encryption only to specific regions containing sensitive information. This partial encryption approach maintains security for critical data while leaving other areas accessible, thus balancing security requirements with ease of information access for legitimate users.
Solution Approach 2:
The system incorporates user feedback mechanisms such as gaze detection, touch gestures, or voice commands that allow users to dynamically control which areas are decrypted. This feedback loop enables authorized users to easily access encrypted information when needed while maintaining security against unauthorized access.
3Reliability
If the entire target object is encrypted to maximize security, then security is improved, but the ability to recognize the target object is worsened
Solution Approach 1:
The target object is divided into multiple segments or regions, with only the sensitive portions encrypted while other parts remain visible and recognizable. This segmentation allows the encrypted content to maintain security while preserving enough visual information for users to recognize the overall context and purpose of the displayed content.
Solution Approach 2:
Different encryption levels or types are applied to different regions of the target object based on their sensitivity. Critical information receives stronger encryption while less sensitive areas use lighter encryption or none at all, allowing the target object to remain recognizable while protecting the most important data.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3C
AI summary
A security apparatus includes an encryptor configured to visually encrypt a target object, and a decryptor configured to decrypt an area corresponding to a decryption gesture in the encrypted target object, during a predetermined period of time.