no, I haven’t. But what I meant is that among the 4 options that were proposed in the first note: passkeys and nitrokey did not work when I tried them on grapheneos and sms is obviously inferior. Leaving authenticator apps as the clear choice.

Passkeys are great but it still depends on the security of another login as backup. YubiKeys take a bit more effort but it’s worth it to use them for the physical security factor.