RF Module Holding Sensor for Secure RFID Transmission
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Solution Overview
Problem
Conventional RF modules lack secure transmission mechanisms, allowing malicious individuals to steal personal information or conduct unauthorized transactions by simply bringing the module close to a reader-writer device, as they transmit important data without user intention.
Innovation Solution
An RF module with a substrate, holding sensor, and RFIC element that changes signal transmission based on user-intended actions such as holding, bending, or twisting the substrate, ensuring that sensitive information is only transmitted when the user intentionally engages these actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the RF module transmits important information automatically when approaching the reader-writer device, then communication convenience is improved, but security deteriorates allowing unauthorized information theft
Solution Approach 1:
The system performs preliminary actions by detecting whether the substrate is held by a biological body before allowing transmission of important information. This preliminary detection prevents unauthorized transmission while maintaining convenient communication for legitimate users who properly hold the device.
Solution Approach 2:
The system uses feedback from the holding sensor to control the transmission behavior. When the holding sensor detects that the substrate is held by a biological body, the RFIC element transmits important information; otherwise, it does not transmit, thus preventing unauthorized access while maintaining user convenience.
2Ease of operation
If the RF module transmits signal continuously when substrate is held, then user convenience is improved, but information security deteriorates
Solution Approach 1:
The system performs preliminary detection of the holding state before enabling transmission. This ensures that transmission only occurs when the substrate is properly held by the user, preventing unauthorized transmission while maintaining convenient operation for legitimate users.
Solution Approach 2:
The holding sensor provides continuous feedback on the substrate holding state, which the RFIC element uses to control transmission. This feedback mechanism ensures transmission only occurs under appropriate conditions, balancing user convenience with information security.
Data Source
AI summary
An RF system is provided that includes an RFID card and a reader-writer device. The RFID card includes a substrate, an RFIC element, an antenna coil, and a deformation sensor. The reader-writer device and the RFID card transmit and receive predetermined information between an antenna coil of the RFID card and an antenna coil of the reader-writer device through a magnetic field. The RFIC element transmits the first signal via the antenna coil when the deformation sensor does not detect bending deformation of the substrate, and the RFIC element transmits the second signal via the antenna coil when the deformation sensor detects the bending deformation of the substrate.