How do I setup my Yubikey for use as a first or second authentication factor when logging into my grapheneOS device.
For example, before or after I enter my password, I would plug in my Yubico key to finish the login process. To be clear, I'm not referring to account 2fa once inside my phone, but as an authenticator for entering my phone in the first place i.e. as an alternative to fingerprint or swipe patterns.