NFC Card Duplication via Parameter Extraction

Solution Overview

Problem

The existing methods for duplicating Near Field Communication (NFC) cards are costly and time-consuming, requiring significant signaling with a Trust Service Management (TSM) server and utilizing limited secure element memory.

Innovation Solution

An electronic device method that detects an NFC card, acquires relevant parameters, and generates a copy card by storing these parameters, allowing for duplication without authentication using a default key, thereby reducing resource and time requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional NFC card duplication methods using TSM server are employed, then card duplication reliability is improved, but time consumption and cost increase significantly

Engineering Contradiction:

Improvecard duplication reliabilityVSAvoidtime consumption

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent creates a virtual copy of the NFC card by extracting and storing essential parameters (ATQA, SAK, UID) from the original card, enabling the electronic device to simulate the card's functionality without physical duplication or complex server authentication processes

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent extracts only the necessary identification and communication parameters from the original NFC card (ATQA, SAK, UID) rather than duplicating the entire card system, reducing complexity and time requirements while maintaining functionality

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If traditional NFC card duplication methods using TSM server are employed, then card duplication reliability is improved, but cost increases significantly

Engineering Contradiction:

Improvecard duplication reliabilityVSAvoidduplication cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent creates a virtual copy of the NFC card by extracting and storing essential parameters (ATQA, SAK, UID) from the original card, enabling the electronic device to simulate the card's functionality without physical duplication or complex server authentication processes

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent uses inexpensive parameter data (ATQA, SAK, UID) that can be easily extracted and stored, replacing the need for expensive TSM server authentication and secure element memory allocation

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Reliability

If eSE memory is used for NFC card duplication, then card duplication reliability is improved, but memory capacity is limited and cost increases

Engineering Contradiction:

Improvecard duplication reliabilityVSAvoidmemory capacity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent creates a virtual copy of the NFC card by extracting and storing essential parameters (ATQA, SAK, UID) from the original card, enabling the electronic device to simulate the card's functionality without physical duplication or complex server authentication processes

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent extracts only the necessary identification and communication parameters from the original NFC card (ATQA, SAK, UID) rather than duplicating the entire card system, reducing complexity and time requirements while maintaining functionality

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS12120508B2Method for duplicating near field communication card and electronic device therefor

Publication Date: 2024.10.15 SAMSUNG ELECTRONICS CO LTD

AI summary

The disclosure relates to duplication of a near field communication (NFC) card, and an operating method for an electronic device may comprise: detecting a tag of the NFC card; obtaining at least one parameter related to the NFC card; and based on the NFC card satisfying a specified condition, producing a duplicate card of the NFC card by storing the at least one parameter. The specified condition may include the features wherein the NFC card is a designated type of a card and the NFC card uses a default key.