Voice biometrics is the science of using a person’s voice as a uniquely identifying characteristic. One of the two ways we put voice biometrics into practice is called Text Independent Voice Verification. The other is Text Dependent Voice Verification.
Text independent technology does not depend on the person speaking a particular passphrase. This mode of voice biometrics uses conversational speech. A typical text independent use case is authenticating a caller while they are speaking with a call center agent. Another emerging use case is authenticating a user in a voice chat.