Portable NFC Biometric Authentication Device
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Solution Overview
Problem
Many electronic devices lack biometric sensors, making them unable to provide secure and accurate personal authentication, which is essential for functions like payments and access control.
Innovation Solution
A portable biometric authentication device using near field communication (NFC) that acquires biometric information from users and communicates it to a terminal device for authentication, powered solely by an electromagnetic field generated by the terminal device, eliminating the need for internal power sources or batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biometric sensors are incorporated into electronic devices, then personal authentication capability is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The authentication system is divided into two separate components: a portable biometric authentication device containing the biometric sensor and another electronic device that performs the authentication. This segmentation allows devices without biometric sensors to still provide secure authentication by partnering with the portable device, thus improving personal authentication capability without increasing device complexity.
Solution Approach 2:
The portable biometric authentication device acts as an intermediary that bridges the gap between devices lacking biometric sensors and the requirement for secure authentication. It contains the biometric sensor and communicates with other devices via NFC, enabling authentication functionality without requiring each device to have its own biometric sensor, thereby reducing manufacturing complexity.
2Reliability
If biometric sensors are incorporated into electronic devices, then personal authentication capability is improved, but manufacturing cost and commercial feasibility worsen
Solution Approach 1:
The portable biometric authentication device serves multiple devices simultaneously, providing authentication capability across different electronic devices without requiring each device to be manufactured with biometric sensors. This multi-functionality approach reduces per-device manufacturing costs and complexity while maintaining authentication capability.
Solution Approach 2:
The portable device acts as an intermediary that enables authentication functionality in devices that would be expensive or complex to manufacture with built-in biometric sensors. This approach improves manufacturing feasibility by separating the expensive biometric sensor component into a shared portable device.
3Duration of action of moving object
If the portable biometric authentication device uses an internal power source, then operational independence is improved, but device size and complexity increase
Solution Approach 1:
The terminal device's NFC electromagnetic field serves dual purposes: it enables communication and provides power to the portable authentication device. This multi-functionality approach eliminates the need for a separate power source in the portable device, reducing its complexity and size while maintaining operational capability through the terminal device's power provision.
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
Enables secure and accurate personal authentication without the need for internal power sources or batteries, providing a convenient and compact solution for devices that cannot incorporate biometric sensors, enhancing user experience and security.
Implementation Method 1
a NFC antenna, a power supply circuit that generates at least one power voltage in response to an electromagnetic field generated by the terminal device and received via the NFC antenna
Implementation Method 2
a power supply circuit that generates at least one power voltage in response to an electromagnetic field generated by the terminal device and received via the NFC antenna
Data Source
AI summary
A portable biometric authentication device communicates with a terminal device using near field communication (NFC). The portable biometric authentication device includes; a NFC antenna, a power supply circuit that generates at least one power voltage in response to an electromagnetic field generated by the terminal device and received via the NFC antenna, a sensor subsystem that operates in response to the at least one power voltage and includes a biometric sensor that acquires biometric information from a user, and a control subsystem that operates in response to the at least one power voltage and includes a NFC controller that controls the communication of the biometric information to the terminal device using the NFC antenna.