A passkey is a modern, secure way to log in to websites and apps without using a password. It replaces traditional passwords with cryptographic keys, making logins both easier and much harder to hack.

Here's how it works:

• A passkey is a pair of cryptographic keys: one public and one private.

• The public key is stored on the website or app.

• The private key is stored securely on your device (like your phone or laptop) and never leaves it.

• To log in, the site sends a challenge that can only be answered by the private key. Your device signs the challenge (usually after biometric authentication like Face ID or a fingerprint), proving your identity.

Key Benefits:

• No passwords to remember or leak

• Resistant to phishing (you can't be tricked into giving away a passkey)

• Stronger security than traditional 2FA or password methods

• Cross-device support: Services like iCloud or Google sync your passkeys across your devices