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Uday Chandra
Uday Chandra

Posted on • Edited on

nocaptcha: Replacing CAPTCHAs with Single-use Passkeys

Introduction

We've open-sourced nocaptcha, a project that replaces traditional CAPTCHA puzzles with WebAuthn passkeys for bot prevention.

GitHub: https://github.com/singlr-ai/nocaptcha
Try it: https://demo.singlr.ai/nocaptcha/

Technical Implementation

nocaptcha uses WebAuthn credentials as single-use tokens. Instead of solving puzzles or selecting images, users simply perform a tap/touch authentication using their device's security features.

Key aspects:

  • No persistent user registration needed
  • Leverages hardware security features via WebAuthn/Passkeys
  • Simple authentication flow
  • MIT licensed

Current State & Roadmap

We're working with the W3C WebAuthn Community Group on enabling truly disposable passkeys.

Contributing

Looking for feedback and contributions

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