Electromagnetic Overlay Screen for Presentation Security
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Solution Overview
Problem
Presentation software often contains sensitive information that can be inadvertently copied or leaked when displayed, as existing technologies do not effectively prevent image capture by cameras or video recording devices without obstructing human viewing.
Innovation Solution
A method and system that utilize an electromagnetic overlay screen with configurable electromagnetic emitters to emit signals, such as infrared rays, that inhibit image capture of sensitive information on presentation slides while allowing human viewing, by positioning the emitters over a display device to saturate light detecting sensors of image capture devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electromagnetic overlay screen with emitters is used to prevent image capture, then security of sensitive information is improved, but device complexity increases
Solution Approach 1:
The electromagnetic overlay screen is positioned over the display device, creating a nested structure where the overlay screen contains multiple electromagnetic emitters that are integrated into a single protective layer. This nesting approach allows multiple emitters to work together from a unified structure, enhancing security while managing complexity through integration.
Solution Approach 2:
The electromagnetic overlay screen acts as an intermediary between the display device and the environment. It mediates the interaction by selectively allowing visible light to pass through for human viewing while blocking electromagnetic signals from image capture devices, thus protecting sensitive information without requiring direct modification of the display device.
2Reliability
If electromagnetic signals are emitted to saturate light detecting sensors, then image capture is inhibited, but energy consumption increases
Solution Approach 1:
The electromagnetic emitters can be activated periodically or on-demand rather than continuously. The system detects when image capture is attempted and activates the emitters only during those moments to saturate the light detecting sensors, thereby preventing image capture while minimizing overall energy consumption.
Solution Approach 2:
The electromagnetic emitters change their emission parameters (intensity, wavelength, duration) based on the detected need for protection. By adjusting these parameters dynamically, the system achieves effective sensor saturation with minimal energy expenditure, rather than maintaining constant high-energy emission.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively prevents image capture of sensitive information on presentation slides by image capture devices without obstructing human visibility, ensuring that confidential data remains secure during presentations.
Implementation Method 1
causing at least one electromagnetic emitter to emit an electromagnetic signal within the location of the identified at least one portion... the emitted electromagnetic signal is an infrared (IR) ray
Data Source
AI summary
Techniques are disclosed for sensitive information leak prevention using electromagnetic rays to prevent image capture of sensitive information. An example methodology implementing the techniques includes rendering a presentation slide on a display device, identifying at least one portion of the rendered presentation slide that contains sensitive information, and determining a location of the identified at least one portion on the rendered presentation slide. The method also includes triggering at least one electromagnetic emitter to emit an electromagnetic signal within the location of the identified at least one portion of the rendered presentation slide. The emitted electromagnetic signal inhibits image capture of the sensitive information by an image capture device.