This appears to be developed in concert with Google, though I don't know if Google is promoting this yet: https://github.com/WICG/sms-one-time-codes https://git

This appears to be developed in concert with Google, though I don't know if Google is promoting this yet: https://github.com/WICG/sms-one-time-codes https://github.com/WICG/sms-one-time-codes