The Password Problem

Passwords have been the foundation of online security for decades — and they've been causing problems just as long. Weak passwords, reused passwords, phishing attacks, and data breaches are all, at their core, password problems. The tech industry has been trying to replace passwords for years, and passkeys are the most credible attempt yet.

What Is a Passkey?

A passkey is a cryptographic credential that replaces a traditional password. Instead of a string of characters you type, a passkey uses a pair of cryptographic keys — one public (stored by the website) and one private (stored securely on your device). When you log in, your device proves it holds the private key by signing a challenge from the server — without ever sending the key itself.

From the user's perspective, logging in with a passkey looks like this: you visit a site, tap "Sign in with passkey," and authenticate with your device's biometrics (Face ID, fingerprint, or PIN). That's it. No password to remember, type, or forget.

How Passkeys Are More Secure Than Passwords

  • Phishing-resistant by design. Because passkeys are cryptographically bound to the exact website they were created for, a fake phishing site can't capture them. Your device simply won't authenticate to a fraudulent domain.
  • Nothing to steal from a server breach. The server only holds your public key, which is useless to an attacker without the private key on your device.
  • No reuse problem. Each passkey is unique to each service, so compromising one account doesn't affect others.
  • No weak passwords. The cryptographic keys are generated with high entropy — they can't be "weak."

Where Can You Use Passkeys Today?

Passkey support has grown rapidly. Major platforms that now support passkeys include:

  • Google (Google accounts and Android)
  • Apple (iCloud Keychain on iOS 16+ and macOS Ventura+)
  • Microsoft (Windows Hello, Microsoft accounts)
  • GitHub, Shopify, PayPal, and a growing number of websites and apps

The FIDO Alliance and W3C's WebAuthn standard underpin passkeys, meaning they're built on an open, cross-platform framework — not a single company's proprietary system.

Where Passkeys Are Stored

Passkeys live in your device's secure hardware enclave (the part of your chip specifically designed to protect cryptographic secrets). They're also synced across your devices through your platform's credential manager:

  • Apple devices: iCloud Keychain
  • Android/Google: Google Password Manager
  • Windows: Windows Hello / Microsoft Authenticator
  • Third-party managers: 1Password and Dashlane also support passkeys

Limitations and Considerations

Passkeys aren't without caveats:

  • Device dependency: If you lose your device and have no backup, account recovery can be complex. Cloud sync mitigates this but introduces its own trust considerations.
  • Cross-platform friction: Signing into a Google account with a passkey stored on your iPhone via a Windows computer requires a QR code step — workable, but not seamless.
  • Adoption is still growing: Not every site supports passkeys yet. Passwords will remain necessary for many services for some time.

Should You Start Using Passkeys Now?

Yes — where supported. Passkeys are objectively more secure than passwords and more convenient for daily use once set up. Start with your highest-value accounts (Google, Apple ID, financial services) and adopt passkeys as each service you use adds support.

Passwords won't disappear overnight, but passkeys represent a genuine, well-engineered step toward a more secure and frictionless digital identity. The transition is happening — getting familiar with it now puts you ahead of the curve.