Screen Privacy Control Using Camera-Based Background Detection
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Solution Overview
Problem
Existing user devices lack effective mechanisms to protect confidential information displayed on screens from being viewed or captured by unintended background objects in public areas.
Innovation Solution
A privacy management system that utilizes a device camera to capture image data, analyze for background objects, and initiate actions such as dimming the screen or providing alternative information to safeguard sensitive data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display screen shows confidential information in public areas, then the user can access and view information, but unauthorized users can view or capture the information
Solution Approach 1:
The system performs preliminary detection of background objects (people, devices, cameras) before displaying confidential information. The camera continuously monitors the environment and the processor analyzes captured images to identify potential unauthorized viewers, initiating privacy protection measures before information exposure occurs
Solution Approach 2:
The camera and image analysis system serve as an intermediary between the display screen and potential unauthorized viewers. By detecting background objects through the camera, the system mediates whether confidential information should be displayed, blocking or obscuring it when threats are detected
2Reliability
If the camera continuously captures image data to detect background objects, then privacy protection is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous capture, the camera operates periodically or on-demand. The processor triggers image capture events based on specific conditions such as detecting motion in the background, transitioning to confidential information display, or at scheduled intervals, reducing overall energy consumption while maintaining effective privacy monitoring
Solution Approach 2:
The system uses the device's existing camera hardware for dual purposes: both for primary camera functions (photography, video calls) and for privacy monitoring. This self-service approach leverages already-powered components, minimizing additional energy consumption dedicated specifically to privacy protection
3Object-affected harmful factors
If the screen brightness is reduced to prevent unauthorized viewing, then privacy is protected, but the user's viewing experience deteriorates
Solution Approach 1:
The obscuration effect is applied locally only to the portions of the display that would be visible to unauthorized viewers, rather than reducing the brightness of the entire screen. The processor determines which areas need protection and applies selective obscuration, maintaining overall display quality for the authorized user
Data Source
AI summary
A privacy management system includes a computing system with one or more processors. The privacy management system also includes memory storing instructions executable by the one or more processors to cause the computing system to detect use of an application on a user device operated by a user. The instructions are executable by the one or more processors to cause the computing system to instruct a camera of the user device to capture image data during the use of the application on the user device, and then to analyze the image data to identify a presence of one or more background objects. Further, the instructions are executable by the one or more processors to cause the computing system to initiate one or more privacy actions with respect to information on a display screen of the user device, in response to the presence of the one or more background objects.