User-Actuated RFID Antenna Coupling for Secure Multi-Use Cards
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Solution Overview
Problem
Existing RFID devices require costly manufacturing processes, such as cold lamination, to integrate actuation sensors, which may not meet ISO card requirements and complicate manufacturing.
Innovation Solution
An RFID device with a switch module and integrated circuit embedded in the device body, allowing inductive or direct coupling to the RFID antenna upon user actuation, enabling multiple applications and simplifying manufacturing by eliminating the need for additional processing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cold lamination is used to integrate actuation sensors, then sensor integration is achieved, but manufacturing cost increases and ISO card requirements are not met
Solution Approach 1:
The patent merges the actuation sensor, switching portion, and integrated circuit into a single switch module that is integrated into the RFID device body. This consolidation eliminates the need for separate cold lamination processes and allows the entire assembly to meet ISO card requirements through unified manufacturing.
Solution Approach 2:
The switch module serves multiple functions: it contains the actuation sensor for user input, the switching portion for circuit control, and the integrated circuit for RFID communication. This multi-functionality reduces manufacturing steps while maintaining compliance with ISO standards.
2Ease of manufacture
If cold lamination is used to integrate actuation sensors, then sensor integration is achieved, but manufacturing complexity increases
Solution Approach 1:
By combining the actuation sensor, switching portion, and integrated circuit into a single pre-assembled switch module, the patent eliminates multiple separate manufacturing steps including cold lamination. The module is integrated into the RFID device body as one unit, significantly reducing manufacturing complexity.
3Reliability
If a switch module with integrated circuit is used, then user-controlled secure communication is achieved, but device structure becomes more complex
Solution Approach 1:
The patent combines the actuation sensor, switching portion, and integrated circuit into a single integrated switch module. This merging reduces device structural complexity while maintaining the security function of user-controlled communication activation.
4Adaptability or versatility
If multiple switch modules are provided, then multiple applications are enabled, but device complexity increases
Solution Approach 1:
The patent provides multiple switch modules, where each module can be configured for different applications (e.g., different RFID communication protocols or access levels). The modular design allows versatility while keeping each individual module relatively simple in structure.
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
Facilitates secure RFID communications by user-controlled actuation, reduces manufacturing complexity, and allows a single device to serve multiple functions, enhancing flexibility and application range.
Implementation Method 1
Upon presence of an electromagnetic field emitted by a reader device, the RFID antenna supplies energy from the electromagnetic field to the integrated circuit
Implementation Method 2
a switching portion configured to couple the integrated circuit to the RFID antenna via the coupling portion upon actuation of the actuation portion by a user
Data Source
AI summary
A secure RFID device (10) is provided. The RFID device (10) includes one or more switch modules (26) that can be actuated by a user to selectively couple an integrated circuit (42) provided in a switch module (26) to a main RFID antenna (14) of the RFID device (10). It is therefore not necessary to provide a separate integrated circuit (42) coupled to the main RFID antenna (14). The integrated circuit (42) provided in each switch module (26) can be electrically or inductively coupled to the main RFID antenna (14) when a user actuates an actuation portion (36) of the corresponding switch module (26).