Portable Data Carrier Light Signals for Display Authenticity
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Solution Overview
Problem
Existing display technologies on terminal devices are vulnerable to 'man-in-the-middle' attacks, where attackers can intercept and manipulate sensitive information, compromising its authenticity and security.
Innovation Solution
A method using a portable data carrier with a light signal unit that emits light signals to display data on a terminal device, ensuring that sensitive information can only be recognized by authorized viewers through coordinated light signals, masking out interference information and preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If display data is shown on a display element controlled by operating software, then information can be displayed to users, but the information becomes vulnerable to man-in-the-middle attacks and unauthorized manipulation
Solution Approach 1:
A portable data carrier with a light signal unit is introduced as an intermediary between the information source and the display element. The light signal unit emits light signals that must be received and processed for the information to become visible, creating a trusted mediation layer that prevents unauthorized manipulation by attackers.
Solution Approach 2:
The patent replaces the vulnerable electronic control system with an optical signaling system. Instead of relying on software-controlled display elements that can be hacked, the system uses light signals from a portable data carrier to activate and control the display, making the system resistant to electronic attacks.
2Reliability
If light signals are used to mask interference information, then security is improved, but the device complexity increases due to coordination requirements
Solution Approach 1:
The portable data carrier combines multiple functions into a single device: it stores display data, generates light signals, and controls the timing of both. This merging eliminates the need for complex coordination between separate systems, as all functions are integrated in one trusted device.
Solution Approach 2:
The portable data carrier pre-synchronizes the display data and light signal emission before the actual display process. By preparing the coordination in advance, the system avoids complex real-time synchronization requirements during operation, simplifying the overall system design.
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
This approach effectively protects sensitive information from unauthorized access and ensures authenticity by requiring light signals for recognition, eliminating the need for additional security infrastructure, thus enhancing the security of displayed data on terminal devices.
Implementation Method 1
A corresponding portable data carrier comprises an interface for connection to the terminal device and a light signal unit, which emits the light signals intended for the display element
Data Source
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AI summary
In order to display useful information (25) on a display element (21) of a terminal unit (20), display data comprising useful information (25) is displayed (S2) on a display element (21), and light signals (18) are transmitted (S3) to the display element (21) by means of a light signal unit (12) of a portable data carrier (10), wherein the display data is displayed (S2) on the display element (21), and the light signals (18) are transmitted (S3) to the terminal unit (20) such that a viewer of the display element (21) may identify (S5) the useful information (25).