NFC Tag Recognition Device Motion Authentication
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Solution Overview
Problem
Conventional NFC-based security systems are vulnerable to theft or copying of NFC tags, and existing methods for controlling object location in VR spaces are inaccurate and require expensive equipment.
Innovation Solution
NFC tag recognition devices that authenticate users by measuring the motion pattern of an NFC tag, comparing it with a registered pattern, and generating an authorization signal to control locks, while also extracting 3D location information using existing equipment, thus providing a secure and precise solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional NFC-based security systems are used, then ease of operation is improved, but reliability is worsened due to vulnerability to theft or copying of NFC tags
Solution Approach 1:
The system performs preliminary actions by measuring the distance between the NFC tag and reference point, and calculating changes in this distance to generate authentication pattern data before comparing it with stored authentication patterns. This preliminary measurement and calculation process creates a unique authentication signature that prevents simple copying of NFC tags, thereby improving reliability while maintaining ease of operation.
2Ease of operation
If existing methods for controlling object location in VR spaces are used, then ease of operation is improved, but measurement precision is worsened due to inaccuracy and requirement of expensive equipment
Solution Approach 1:
The patent replaces expensive mechanical or optical tracking equipment with an NFC-based electromagnetic field measurement system. By measuring the distance between the NFC tag and reference point using RF signal power measurements, and calculating 3D location information through authentication signal processing, the system achieves accurate object location control without requiring costly mechanical or optical equipment, thereby improving measurement precision while maintaining ease of operation.
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
The NFC tag recognition devices offer enhanced security by verifying user authenticity and providing accurate 3D location information, reducing manufacturing costs and improving security functions compared to conventional NFC systems and VR control methods.
Implementation Method 1
at least one antenna, a radio frequency (RF) signal processor operatively connected to the at least one antenna and configured to measure power of an RF signal received by the at least one antenna from an external device comprising an NFC tag
Data Source
AI summary
An NFC tag recognition device includes an antenna responsive to signals transmitted by an NFC tag, a radio frequency (RF) signal processor measuring power of the signal received by the antenna from the NFC tag and converting the signal into digital data, an NFC controller extracting an authentication key from the digital data, an authentication signal processor generating an authentication pattern from the NFC tag, and an authentication signal storage storing an authentication key and an authentication pattern of a registered user. The authentication signal processor generates an authorization grant signal if the extracted authentication key matches the stored authentication key and the generated authentication pattern matches the stored authentication pattern.