Voice Captcha · vCAPTCHA

Voice Captcha (vCAPTCHA) is a free service from SentraKaya that helps protect websites from spam and abuse.

Protects Sign-upsContact formsLoginsComments FREE
Please say the sentence below aloud
Waiting for microphone permission… Live demo · SentraKaya vCAPTCHA

Live demo with indicative scoring only. Your browser may use its own speech service to check the words. This page does not record or store audio.

What it protects

Stop spam and abuse at the door.

Put vCAPTCHA in front of any form or action that bots like to target.

Sign-up Forms

Keep fake and automated accounts out before they are created.

Contact and Lead Forms

Filter junk submissions so your inbox holds real enquiries.

Logins

Add a human check in front of automated sign-in attempts.

Comments and Reviews

Stop spam and abuse from filling up your community.

How it works

Three steps. A few seconds.

Visitors prove they are human by speaking, instead of squinting at puzzles.

01

Add the Widget

Place vCAPTCHA on the page or form you want to protect.

02

The Visitor Speaks

A short voice prompt appears. A real person says it aloud.

03

Humans pass, Bots stop

Real voices go straight through. Automated and synthetic voices are challenged or blocked.

Why vCAPTCHA

Simple for people. Hard for bots.

A free way to keep your website clean, from the team that listens for synthetic voices.

Free to Use

vCAPTCHA is a free service from SentraKaya, with no cost to protect your site.

Built on Voice Expertise

SentraKaya specialises in telling human voices from synthetic ones.

Quick for Visitors

Saying a few words takes seconds, with no image puzzles to solve.

Less Spam to Clean Up

Fewer junk accounts, messages and comments for your team to remove.

Protect your site with vCAPTCHA.

It is free. Get in touch and we will help you get started.

Get started free or write to info@sentrakaya.com