Smart Card Microphone Integration for Voice Authentication
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Solution Overview
Problem
Conventional user authentication methods in mobile communication devices, such as PIN entry, are vulnerable to tampering and unauthorized access due to the use of external microphones for voice inputs, which can be compromised, and do not guarantee that the input is made by the authorized user.
Innovation Solution
A smart card with an integrated microphone and processing means for capturing and processing audio signals, ensuring secure voice-based user authentication by comparing voice samples to reference information and encrypting audio signals before transmission, thus preventing tampering and ensuring secure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a peripheral microphone is used for voice input, then the device can capture audio signals, but the microphone can be tampered with or traced, compromising security
Solution Approach 1:
The patent integrates the microphone directly into the smart card, merging the audio capture function with the security authentication function. This ensures that the microphone is controlled by the card itself rather than being a separate peripheral that could be tampered with, thereby resolving the contradiction between voice input capability and security reliability.
2Reliability
If PIN entry is used for authentication, then user verification can be performed, but the transmission of PIN from keypad to smart card can be traced or tampered with
Solution Approach 1:
The patent replaces the mechanical PIN entry system with a voice-based authentication system. Instead of transmitting a PIN through the keypad and communication interface (which can be traced or tampered with), the system uses acoustic signals captured by the integrated microphone, eliminating the vulnerable transmission path while maintaining authentication reliability.
3Adaptability or versatility
If a peripheral microphone is used for voice authentication, then voice-based user identification can be achieved, but the microphone can be compromised by third parties
Solution Approach 1:
The smart card acts as an intermediary between the user and the authentication system. By integrating the microphone into the card, the system creates a secure intermediary that controls the audio capture process, preventing third parties from compromising the microphone while enabling voice authentication functionality.
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 solution provides secure voice-based user authentication and communication by integrating the microphone into the smart card, preventing tampering and ensuring that only authorized users can access the device or communication network, thereby enhancing security and reliability.
Implementation Method 1
a microphone (109) for capturing an audio signal
Data Source
Figure 1~2
AI summary
In order to allow for a secure capturing of audio signals, in particular a voice signal, the invention suggests a smart card (101) comprising a microphone (109) for capturing an audio signal and comprising at least one processing means (104; 110; 111 i) for processing the audio signal. By integrating the microphone into the smart card (101) security risks that occur in connection with external, peripheral microphones can be avoided. The smart card (101) may particularly be configured for use in a mobile communication device and the invention further suggests a mobile communication device comprising the smart card (101)