I found this in the ublue forum https://universal-blue.discourse.group/t/gpg-smartcard-support-with-
I found this in the ublue forum https://universal-blue.discourse.group/t/gpg-smartcard-support-with-usb-security-keys/397 Looks like there is support for yubikeys in the base image which would mean that Bazzite has it too. But looking at the first comment, it looks like you need to do a workaround to get it to work.