2 ms·We'll need 2 factor auth for phone calls at that pointby chrisulloa 6y agoWe'll need 2 factor auth for phone calls at that pointkoolba 6y agoTOFU with digital signatures to verify the originating device would be huge for voice calls.sneak 6y ago“oh, sorry mom, I got a new phone for the trip so it would work overseas. don’t worry about that! just send the money quickly so we can pay the hospital.”