Securing the voice channel: Advanced voice biometric authentication for contact centers

Selvanathan, Gokulkumar (2025) Securing the voice channel: Advanced voice biometric authentication for contact centers. World Journal of Advanced Research and Reviews, 26 (2). pp. 3211-3219. ISSN 2581-9615

Voice biometrics is emerging as a transformative technology for contact centers seeking enhanced security without compromising customer experience. This comprehensive article examines how voice authentication leverages the unique vocal characteristics of individuals to create secure identity verification processes. By exploring the fundamental components of voice biometric systems—from enrollment and matching to liveness detection and anti-spoofing measures—it provides insights into the technological underpinnings of this authentication method. The article details integration approaches through APIs and decisioning frameworks that enable seamless implementation within existing customer journeys. It addresses key challenges including environmental factors, voice variations, and aging effects on voice patterns. The discussion concludes with an examination of privacy considerations and regulatory compliance requirements, demonstrating how voice biometrics, when implemented thoughtfully, offers a balanced solution that strengthens security while eliminating the friction associated with traditional authentication methods.