Using Yubi Key for 2FA

Is there a way to use a yubi key for the 2FA, or is that an option for in the future?

Yes, but only with a Yubikey that is NFC enabled.

Download the Yubikey mobile authentication app to your mobile device, tap the Yubikey to your device to authenticate. Then add a new account and scan the Umbrel bar code.

Now you can login to Umbrel using 2FA with your mobile Yubikey app + NFC Yubikey.

Thanks, FN1!