Vendor page
Voice biometrics: how voice biometrics works (Nuance Gatekeeper documentation)
Nuance Communications, Gatekeeper documentation, n.d.
Read the originalRead on October 17, 2026
- What it is
- The fundamentals page of the Nuance Gatekeeper product documentation. It explains that a voice biometrics system compares a caller's speech with a voiceprint enrolled earlier, and it defines text-dependent and text-independent verification.
- How much weight it carries
- A vendor's own product documentation, so it describes how one commercial product family is designed to work, not how all voice biometric systems work. It gives no accuracy figures. Useful for the basic model: enrollment, comparison and the two verification modes.
Facts taken from this source
- The Nuance Gatekeeper documentation says a voice biometrics system compares spoken utterances with previously enrolled voiceprints, and determines whether they are spoken by the same speaker.
“The biometrics system compares spoken utterances with previously enrolled voiceprints, and determines whether they are spoken by the same speaker.” (Fundamentals: how voice biometrics works)
- The Nuance Gatekeeper documentation says text-dependent verification uses a passphrase to identify the speaker.
“Text-dependent verification uses a passphrase to identify the speaker” (Fundamentals: biometrics operations table, Verification row)
- The Nuance Gatekeeper documentation says text-independent verification uses conversational audio of the speaker, rather than a fixed passphrase.
“Text-independent verification uses conversational audio of the speaker” (Fundamentals: biometrics operations table, Verification row)