Passkey Tester & Generator

What Are Passkeys?

Passkeys are a passwordless authentication standard built on WebAuthn/FIDO2 technology. Instead of typing passwords, you authenticate with biometrics (Face ID, Touch ID, fingerprint), a device PIN, or a hardware security key. Passkeys are phishing-resistant, cannot be reused across sites, and eliminate the need to remember passwords. Apple, Google, and Microsoft have made passkeys a default authentication option across their platforms since 2023.

This tool tests whether your current browser and device fully support the passkey standard, including platform authenticator support, conditional UI (autofill), and cross-device authentication.

Why Test Passkey Compatibility?

If you are a developer building passkey authentication, testing across browsers and devices is essential. Not all browsers support every WebAuthn feature — conditional mediation (passkey autofill) requires Chrome 108+, Safari 16+, or Edge 108+. Platform authenticator support varies by OS version. This tool gives you a quick compatibility matrix without writing test code.

For end users, knowing your passkey readiness helps you understand which sites you can use passkeys with and whether you need to update your browser or device for full support.

Passkey Adoption in 2026

As of 2026, over 15 billion accounts support passkey authentication. Major platforms including Google, Apple, Microsoft, Amazon, PayPal, GitHub, and Discord have implemented passkeys. The FIDO Alliance reports that passkey adoption has grown 400% since 2024, driven by improved browser support and OS-level integration. Enterprise adoption is accelerating as organizations move away from passwords to reduce phishing risk and compliance overhead.

How Passkeys Work Technically

Passkeys use public-key cryptography. When you create a passkey, your device generates a unique key pair — the private key stays on your device (protected by biometrics or PIN), while the public key is sent to the website. During authentication, the site sends a challenge, your device signs it with the private key, and the site verifies it with the public key. The private key never leaves your device, making passkeys immune to server breaches and phishing attacks.