Voice Biometric Identity Verification via Telephony Channels
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Solution Overview
Problem
Existing identity verification systems relying on two-factor authentication, such as SMS or voice calls, are vulnerable to fraud and cannot effectively incorporate biometric data due to communication limitations via telephony devices.
Innovation Solution
A communications service provider system that registers and verifies biometric data, specifically voice prints, using audio or messaging channels, enabling secure identity verification through voice biometrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-factor authentication schemes are used with telephony devices, then identity verification can be accomplished, but the system is vulnerable to fraud and lacks biometric security
Solution Approach 1:
The system changes the parameter of authentication factors from two (telephone number and verification code) to three (adding voice biometric data). This parameter change enhances security by incorporating physiological characteristics that are difficult to replicate, directly addressing the fraud vulnerability while maintaining compatibility with telephony devices
Solution Approach 2:
The patent introduces an intermediary component - the voice biometric verification system - that bridges the gap between simple telephony communication and secure biometric authentication. This intermediary processes audio data to extract and verify voiceprints, enabling enhanced security without requiring advanced communication infrastructure
2Reliability
If three-factor authentication with biometric information is implemented, then fraud resistance improves, but device complexity and operational difficulty increase when limited to telephony devices
Solution Approach 1:
The system achieves multi-functionality by using the existing telephony device for multiple purposes: traditional voice calls, SMS verification codes, and biometric voiceprint capture. This universal approach allows three-factor authentication without adding separate biometric hardware, thereby reducing device complexity while maintaining fraud resistance
Solution Approach 2:
The telephony device itself serves the biometric capture function by recording the user's voice through its existing microphone during normal audio communication. The system processes this self-captured data to generate voiceprints, eliminating the need for external biometric sensors and simplifying the overall system architecture
3Reliability
If biometric verification is implemented through telephony devices, then security is enhanced, but communication limitations restrict the types of biometric data that can be collected
Solution Approach 1:
The system replaces complex biometric collection mechanisms (such as fingerprint scanners, facial recognition cameras, or iris sensors) with a simple acoustic field-based voice capture method. This substitution leverages the telephony device's existing audio capabilities to collect biometric data, maintaining security enhancement while adapting to communication limitations
Data Source
AI summary
A system for registering an individual's biometric data and then later verifying the identity of the individual using the previously registered biometric data makes use of either an audio communications channel or a messaging channel, both of which are accessed via an application programming interface (API). In some instances, spoken audio input is received from the individual and the spoken audio input is used to generate a voice print for the individual. In other instances, the biometric data could be image-based, such as facial images or an image of an individual's iris.