Adding a passkey to an account is like adding a yubikey to an account (experience wise). You can (typically) add multiple keys to your account.
It's also not all or nothing. You can (in every service I've setup) still have a password and an even a TOTP.
The multiple passkey option kicks out my other session when i use the other passkey.
Adding a passkey to an account is like adding a yubikey to an account (experience wise). You can (typically) add multiple keys to your account.
It's also not all or nothing. You can (in every service I've setup) still have a password and an even a TOTP.