Electronic Document Chip-Antenna Connection Check Against Reuse
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Solution Overview
Problem
Existing electronic documents lack a secure connection between the chip and the antenna, allowing thieves to extract the chip and reuse it in another body, compromising security and making fraudulent transactions difficult to detect.
Innovation Solution
An electronic document module with antenna contact interfaces on its internal face connected to the chip's I/O port, enabling the chip to detect if it is still connected to the antenna during operation, particularly by contact mode, and a method to verify this connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the chip is connected only to contact interfaces without antenna connection, then the module can operate by contact mode, but the security against chip extraction and reuse is compromised
Solution Approach 1:
The patent merges the antenna contact interfaces with the chip's I/O port connections. The antenna contact interfaces on the medium's internal face are directly connected to the chip's I/O port, creating a unified connection structure that serves both antenna communication and chip authentication functions, thereby improving security without significantly increasing complexity
Solution Approach 2:
The patent implements a feedback mechanism where the chip verifies the integrity of its connection to the antenna through the I/O port. The system continuously monitors the connection status between the chip and antenna, and can detect attempts to extract or reuse the chip in a different body, providing active security feedback
2Adaptability or versatility
If the chip is disconnected from the antenna, then fraudulent reuse becomes easier, but the ability to perform contactless operations is lost
Solution Approach 1:
The I/O port of the chip serves multiple functions: it connects to the antenna for contactless operations and simultaneously provides authentication feedback to detect chip extraction attempts. This multi-functional connection allows the system to maintain both contactless capability and security against fraud
Solution Approach 2:
The system performs preliminary authentication checks through the I/O port connection before allowing operations to proceed. By verifying the integrity of the chip-antenna connection in advance, the system prevents fraudulent reuse while maintaining the ability to perform contactless operations when authenticated
3Ease of manufacture
If traditional direct connection between chip terminals and printed circuit is used, then manufacturing is simpler, but security verification of antenna connection is impossible
Solution Approach 1:
The I/O port connection acts as an intermediary between the chip and antenna, providing a verification pathway without disrupting the simple manufacturing process. This intermediary connection allows the system to measure and verify the antenna connection status while maintaining the straightforward chip mounting process
Data Source
AI summary
The present application relates to an electronic document module comprising a medium having a so-called internal face provided with at least two contact interfaces with an antenna, each of the contact interfaces with the antenna of the internal face of the medium being configured to be in contact with a connection pad of an antenna of an electronic document body, and with a chip comprising at least one I/O port, and one of the two contact interfaces with the antenna of the internal face of the medium being connected to the I/O port of the chip. The application also relates to an electronic document comprising such a module and a method for checking a connection between the module and a corresponding antenna.