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Does it work with TOTP codes like Messages? That's my benchmark. Google Voice does not.
by nathancahill 2y ago
Does it work with TOTP codes like Messages? That's my benchmark. Google Voice does not.
- aftbit 2y agoI assume you're talking about SMS 2FA code. TOTP doesn't require any networking - it's just an HMAC of the current time using a preshared key. Whether or not SMS 2FA works with a VoIP number is a decision made by the 2FA provider. The most paranoid of them (usually banks IME) will not send 2FA codes to VoIP numbers - they require a for-real cellphone number provided by a cellular provider. There are some VoIP numbers that try to pretend to be this, but none of them are reliable, and AFAIK Whatsapp does not even try.
- nathancahill 2y agoSorry, yeah 2FA. WhatsApp already delivers 2FA codes for Meta properties. I've never had my Google Voice phone number rejected from any 2FA signup, and the codes deliver fine. But won't show up above the keyboard like Messages does.