104
I hate 2FA Hell
(hexbear.net)
On the road to fully automated luxury gay space communism.
Spreading Linux propaganda since 2020
Rules:
VoIP is not supported for 2FA by some institutions like banks because it may be less secure than a conventional phone line, since it is connected to the internet. In practice, I think SMS is insecure regardless whether it is over the internet or phone line, but in any case that is why VoIP is not fully supported.
SMS is very unsecure but companies use it. I think that's what Discord uses on sign up, but they don't allow free numbers like Google Voice.