Fact · Voice privacy and security
The Nuance Gatekeeper documentation says text-dependent verification uses a passphrase to identify the speaker.
Checked against its source on October 17, 2026
In the source's own words
“Text-dependent verification uses a passphrase to identify the speaker”
Voice biometrics: how voice biometrics works (Nuance Gatekeeper documentation), Nuance Communications, Gatekeeper documentation, n.d., Fundamentals: biometrics operations table, Verification row.
Open the original- What it measures
- Product documentation for Nuance Gatekeeper, read on 2026-10-17. The page lists verification as the operation that confirms a caller's identity by comparing the voice with an enrolled voiceprint, in two modes.
- What it does not show
- Describes one vendor's terms. Other systems also call a fixed phrase a passphrase or password, and the wording of the mode differs between products.