> For the complete documentation index, see [llms.txt](https://docs.plumvoice.com/dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.plumvoice.com/dev/plum-dev-guide/voice-biometrics.md).

# Voice Biometrics

For secure multi-factor authentication Plum DEV has voice biometrics verification services available.

Please contact your sales representative for more information.