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by IggleSniggle 1476 days ago
Yes, I was thinking about that, as something like a TOTP. But that needs to be done via DNS-over-HTTPS or DNS-over-TLS or else the code can be sniffed by a MITM since the URL is sent in the clear, at which point you’re back to the problem of persistent TLS anyway.

Edit: In fact, nevermind. My thinking on that was flawed. I think you’re right, that should be fine, as long as the DNS is encrypted.