Voiceproof: Speaker Verification with Captcha A Novel Biometric Access Control Mechanism

Authentication on the digital platform has been a serious concern in today's world. Though fingerprint and facial recognition are being widely used, many methods to circumvent them exist. Voice being another biometric that can be used for individual identification also finds its place in authentication applications because of the promising results reported by various state-of-the-art Automatic Speaker Verification (ASV) systems. Also, voice being the only time-variant remotely available biometric, is unique for authentication applications. The vulnerability of ASV systems to spoofing attacks is also undeniable. Thus, a robust access control system is the need for many applications. This article presents two novel methods to fuse the robustness of CAPTCHA, a well-known method to distinguish human from computer, and uniqueness of voice-biometric for access control applications. It is believed that proposed systems would be efficient for real-time access control systems.