[Meleagris]

Perhaps there’s a B2C offering to be made here. An SMS proxy, forwarding 2FA codes to people without SMS.

It would require a lot of trust.

Similar and related discussions on this post:

https://news.ycombinator.com/item?id=43976359

[JimDabell]

Daito does this:

https://www.daito.io/2fa-via-sms/