Voice Biometrics Access Control for Basic Communication Terminals
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Solution Overview
Problem
Basic communication terminals, lacking Internet access capabilities, face limitations in accessing high-value-added services due to inadequate user authentication methods, primarily relying on MSISDN numbers, which are not secure enough for sensitive data access.
Innovation Solution
Implementing a voice biometrics mechanism using a voiceprint of the user, coupled with a dual-tone multi-frequency (DTMF) or SMS communication channel, to enhance authentication by requiring users to speak a word or phrase, and optionally a password, for secure access to services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If MSISDN number authentication is used for basic communication terminals, then ease of operation is improved, but reliability is worsened
Solution Approach 1:
The patent combines MSISDN number authentication with voice biometrics authentication to create a multi-factor authentication system. The terminal first authenticates using the MSISDN number, then performs voiceprint verification by comparing the user's spoken words against pre-recorded voice samples, thereby merging two authentication methods to achieve both ease of operation and high reliability
Solution Approach 2:
The system performs preliminary voiceprint registration during a setup phase before actual authentication. Voice samples are collected and stored in advance, creating a reference database that enables rapid authentication without requiring complex real-time analysis, thus improving both ease of operation and reliability
2Reliability
If voice biometrics mechanism is implemented, then reliability is improved, but device complexity is worsened
Solution Approach 1:
The patent introduces an authentication server as an intermediary that handles the complex voiceprint analysis and comparison operations. The basic terminal itself does not need sophisticated voice recognition capabilities; instead, it communicates with the server that performs the computationally intensive voice biometrics processing, thereby reducing device complexity while maintaining high reliability
Solution Approach 2:
The system replaces complex mechanical or computational voice analysis hardware in the terminal with a software-based approach that leverages cloud computing resources. The voice processing functionality is substituted from a local mechanical/computational system to a remote server-based system, reducing the complexity requirements of the end-device
3Reliability
If additional authentication requests are implemented, then reliability is improved, but loss of time is worsened
Solution Approach 1:
The system implements adaptive authentication where the level of verification is adjusted based on the service being accessed and the user's authentication history. For low-risk operations, only MSISDN verification is required. For high-value services like banking, the system applies additional voice biometrics and password checks. This partial application of authentication measures reduces time loss for routine operations while maintaining reliability for critical services
Solution Approach 2:
The authentication system incorporates feedback mechanisms where the outcome of each authentication attempt influences subsequent verification requirements. Successful authentications may lead to reduced verification for a period, while failed attempts trigger enhanced verification. The system learns from authentication patterns to optimize the balance between reliability and time efficiency
Data Source
AI summary
A method for authenticating a user of a service on a communication terminal is performed by the communication terminal. The method includes transmitting to a server a request to access the server, the request comprising an identifier associated with the communication terminal and an identifier associated with a required service in the server, receiving, from an authentication device, an authentication request asking the user to pronounce at least one word, and communicating the at least one word pronounced by the user to the device. When the at least one pronounced word corresponds to a voiceprint of the user stored beforehand in association with the identifier of said communication terminal, the terminal then accesses the service or or receives from the device an additional user authentication request.