A passkey lets you sign in with Face ID, Touch ID, Windows Hello or your phone's screen lock instead of typing a password. Your password keeps working either way.

1. Sign in with your email and password as usual.
2. Go to Account in the top navigation.
3. Under Passkeys, tap Add a passkey on this device.
4. Confirm with your fingerprint, face or device PIN when prompted.

Next time, just tap Sign in with a passkey above — no email, no password. Add one on each device you use, and remove any you lose from the Account page.