Voiceprint Authentication Using Overloaded Keywords
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Solution Overview
Problem
Current voice authentication mechanisms in wireless headsets suffer from high false acceptance and rejection rates, compromising security and user experience due to reliance on single, specific passphrases that limit voice analysis and require inefficient verification processes.
Innovation Solution
Implementing a system where each voice command acts as both a functional execution and an identity validation, using overloaded keywords that continuously authenticate the user by comparing spoken commands with pre-determined voiceprints associated with resources, thereby enhancing security and reducing the need for lengthy passphrases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional voice authentication with specific passphrases is used, then security is provided, but false acceptance rate and false rejection rate increase
Solution Approach 1:
The system changes the parameters of voice authentication by transitioning from matching specific passphrase content to analyzing voiceprint characteristics across multiple utterances. This involves changing the matching criteria from lexical accuracy to biometric consistency, thereby improving both false acceptance and false rejection rates simultaneously
Solution Approach 2:
The system performs preliminary voiceprint extraction and analysis during the authentication process before making the final authentication decision. By pre-processing multiple utterances and extracting voiceprint features in advance, the system can make more accurate authentication judgments with reduced error rates
2Ease of operation
If single passphrase authentication is used, then verification process is simple, but security strength is reduced
Solution Approach 1:
The authentication process is segmented into multiple independent utterance analyses, where each utterance provides a separate authentication signal. This segmentation allows the system to accumulate security strength from multiple independent verification events while maintaining the simplicity of individual voice-based interactions
Solution Approach 2:
The voice authentication system is designed to work with any voice command or utterance, making the authentication mechanism universal and applicable to all voice interactions. This multi-functionality allows the same simple voice input to serve both command execution and security verification purposes simultaneously
3Reliability
If multiple voice commands require separate authentication, then security coverage is improved, but interaction efficiency decreases
Solution Approach 1:
The system merges multiple authentication evaluations into a unified continuous verification process. Instead of requiring separate authentication steps for each command, the system combines voiceprint analysis across multiple utterances into a single integrated security assessment, thereby improving security coverage without sacrificing interaction efficiency
Data Source
AI summary
The invention relates to a method for enhanced voiceprint authentication. The method includes receiving an utterance from a user, and determining that a portion of the utterance matches a pre-determined keyword. Also, the method includes authenticating the user by comparing the portion of the utterance with a voiceprint that is associated with the pre-determined keyword. Further, the method includes identifying a resource associated with the pre-determined keyword while comparing the portion of the utterance with the voiceprint. Still yet, the method includes accessing the resource in response to authenticating the user based on the comparison.