Document Display Device Temporal Spectral Security
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Solution Overview
Problem
Existing security and value documents with RFID functionality lack effective protection mechanisms against unauthorized data reading, as the RFID interface can be accessed without the consent of the document bearer.
Innovation Solution
Integration of a display device with controllable display elements that emit optical signals with a temporal spectral progression, making it difficult for counterfeiters to reproduce the document, combined with a reading device that detects and decodes this spectral profile to verify the document's authenticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If RFID interface is integrated into security documents for wireless data access, then convenience of data reading is improved, but security against unauthorized access deteriorates
Solution Approach 1:
The patent introduces an optical intermediary (display device emitting light) between the RFID data storage and the reading process. The display device converts electronic data into optical signals that must be detected and decoded, creating an additional security layer. This intermediary prevents direct unauthorized RFID access while maintaining convenient optical verification for authorized users.
Solution Approach 2:
The patent utilizes temporal spectral progression of light emission from the display device, where the optical characteristics (color/wavelength over time) encode security information. The reading device detects these temporal color variations to verify authenticity, transforming a simple display function into a security verification mechanism that prevents unauthorized RFID reading.
2Reliability
If display device with temporal spectral progression is integrated, then security against counterfeiting is improved, but device complexity increases
Solution Approach 1:
The display device serves multiple functions simultaneously: it displays visual information to users and generates temporal spectral signatures for security verification. The RFID transponder also serves dual purposes as both data storage and power source for the display device. This multi-functionality reduces overall system complexity despite the advanced security features.
Solution Approach 2:
The display device automatically generates the temporal spectral progression without external control, using its inherent operational characteristics (turn-on/turn-off cycles, material properties) to create the security signature. The reading device simply needs to detect and decode these natural variations, eliminating the need for complex synchronized control systems between document and reader.
3Reliability
If Basic Access Control and Extended Access Control are implemented, then protection against unauthorized reading is improved, but ease of operation deteriorates
Solution Approach 1:
The patent replaces complex cryptographic access control mechanisms (Basic Access Control, Extended Access Control) with a simpler optical verification system. Instead of requiring users to manage cryptographic keys and authentication protocols, the system uses inherent optical properties of the display device that are naturally detectable, making authorized access more convenient while maintaining security.
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
The solution enhances security by making it challenging for counterfeiters to reproduce the document and ensures that only authorized access can read sensitive data, thereby protecting the document's integrity and privacy.
Implementation Method 1
The display device has a temporal spectral progression of the light emitted by the display elements, which cannot be visually perceived by an observer.
Implementation Method 2
The reading device has a sensor for detecting the temporal spectral profile of the light emitted by the display device
Implementation Method 3
The data stored on a contactless transponder, for example an RFID transponder, is made available via radio waves. At low frequencies, this happens inductively via a near field, at higher frequencies via an electromagnetic far field.
Data Source
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AI summary
The invention relates to a document with an integrated display device (102), comprising several controllable display elements (103), wherein each of the display elements is designed to output an optical signal for display of a first data set (106) stored in the document, wherein the display controller is designed for cyclical control of the display elements for display of the first data set in sequential image display periods and the display device is designed such that output of the optical signals is carried out with at least a part amount of the display elements with a temporal spectral curve wherein the temporal spectral curve is not visible.