The site https://webauthn.io is a public WebAuthn test and demo platform. It allows developers, educators, and IT staff to experiment with and understand how passwordless authentication works using WebAuthn (Web Authentication), a W3C standard supported by modern browsers.

What the site does:

• Demonstrates passwordless login using security keys, biometrics (like fingerprint or Face ID), or device PINs.

• Lets you register and authenticate using platform or cross-platform authenticators (like YubiKeys or built-in sensors).

• Shows how WebAuthn APIs work behind the scenes in a safe test environment—no real user data is stored.

• Acts as a live lab to help educators or tech teams visualize the process of secure login without passwords.

For educators:

Think of it like a virtual sandbox where you can try Face ID, fingerprint login, or a security key and see how modern authentication works—without needing to set up a whole system.