RFID Transponder Carrier Layer with Hidden Switching Point
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Solution Overview
Problem
Existing valuable or security documents with RFID transponders lack additional security features to prevent theft and unauthorized reading, as the antenna activation mechanisms are often visible or tactilely detectable, making them susceptible to forgery and unauthorized access.
Innovation Solution
Incorporating a hidden switching point in the conductor track of the RFID transponder that can be activated by pressure, allowing the antenna to switch between active and inactive configurations, with a bridging element that can be electrically connected using human skin conductivity or a conductive material, ensuring the activation is not visible or tactilely detectable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the RFID transponder antenna is always active for convenient reading, then ease of operation is improved, but security against unauthorized reading deteriorates
Solution Approach 1:
The antenna is designed with a dynamic switching mechanism that allows it to transition between active and inactive states. The conductor track includes a switching point that can be closed to activate the antenna or interrupted to deactivate it, enabling the system to adapt its state based on security requirements rather than remaining static.
Solution Approach 2:
The switching mechanism is pre-configured in a secure state where the antenna is inactive by default. The system is prepared in advance with a hidden switching point that requires specific activation conditions, preventing unauthorized reading before any interaction occurs.
2Ease of operation
If the switching mechanism is made visible or tactilely detectable for user activation, then ease of operation is improved, but anti-counterfeit protection deteriorates
Solution Approach 1:
A further layer is introduced as an intermediary element that conceals the switching point from direct observation and tactile detection. This layer acts as a mediator between the user and the switching mechanism, allowing activation through pressure transmission while maintaining visual and tactile secrecy of the actual switching point location.
Solution Approach 2:
The further layer is designed as a thin, flexible film that can transmit pressure forces while obscuring the underlying switching point. This film allows the switching mechanism to remain hidden yet still respond to activation pressure applied by the user.
3Productivity
If the conductor track is continuously closed for antenna activation, then productivity is improved, but security against theft deteriorates
Solution Approach 1:
The antenna operates in periodic cycles, alternating between active and inactive states. The conductor track is closed only during authorized reading operations and interrupted during inactive periods, creating a rhythmic pattern of operation that balances productivity with security against theft.
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 solution enhances anti-counterfeit protection and security against theft by hiding the antenna activation mechanism, preventing unauthorized reading and improving the reliability of the security document's operation.
Implementation Method 1
The two open contacts are bridged by the electrodermal nature of the human skin, converting the antenna coil from an inactive to an activated configuration.
Data Source
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AI summary
The invention relates to a carrier layer (104) on which an electrical conductor (108) of an RFID transponder is applied. The conductor (108) has at least one switching point (112) configured to switch between a closed configuration, in which the conductor (108) forms an active or activated antenna of the RFID transponder, and an open configuration, in which the conductor (108) forms an inactive or deactivated antenna of the RFID transponder. The invention also relates to a security document (100) with such a carrier layer (104).