Steganographic Image Conceals Sensitive Data on Portable Cards
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Solution Overview
Problem
Portable devices such as driver's licenses and payment cards contain sensitive information that can be easily viewed or photographed, posing security risks due to the visibility of this information.
Innovation Solution
The use of steganographic images on portable devices, where sensitive information is concealed within a decoy image, and can only be revealed by a specifically paired mobile device, ensuring that only authorized users can access the hidden data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sensitive information is displayed clearly on portable devices, then ease of operation is improved, but security is worsened due to visibility risks
Solution Approach 1:
The patent extracts the sensitive information from the visible display area and embeds it within a steganographic image where it cannot be seen. The information is taken out of plain view and hidden within the pixel structure of an image, allowing the display to show only a decoy image while the mobile device can extract and display the hidden sensitive information when needed.
Solution Approach 2:
The patent introduces a mobile device as an intermediary between the portable device and the user's eyes. The mobile device acts as a mediator that can reveal the hidden information from the steganographic image when brought close to the portable device, while preventing unauthorized viewing from a distance or by casual observers.
2Object-affected harmful factors
If sensitive information is hidden in steganographic images, then security is improved, but ease of operation is worsened due to access complexity
Solution Approach 1:
The patent implements self-service by having the mobile device automatically detect and extract the hidden information from the steganographic image when brought close to the portable device. The system serves itself by using the proximity of the mobile device as the trigger mechanism, eliminating the need for manual extraction processes or complex user interactions.
Solution Approach 2:
The patent replaces manual information access mechanisms with an automated optical/electronic system. Instead of requiring users to manually extract or decode hidden information, the mobile device's camera and processing algorithms automatically detect and reveal the hidden information through optical scanning when brought close to the portable device.
3Ease of operation
If visible data is displayed on portable devices, then ease of operation is improved, but loss of information control is worsened due to unauthorized copying
Solution Approach 1:
The patent segments the information display into two distinct layers: a visible decoy image layer that can be freely viewed and photographed, and a hidden sensitive information layer that is embedded within the steganographic image structure. This segmentation allows the decoy to be visible for operational purposes while the sensitive information remains protected from unauthorized copying.
Solution Approach 2:
The patent applies different quality properties to different parts of the image data. The decoy image portion is visible and accessible, while the hidden information portion is concealed within the pixel structure with properties that make it invisible to the human eye and undetectable by standard photography, yet retrievable by the authorized mobile device.
Data Source
AI summary
A method for concealing sensitive information on a portable device via a steganographic image is disclosed. The portable device can be in the form of a card such as a driver's license or credit card and the hidden information may include a person's name or account number.