The crypto solution he proposes is the same as employed by TextSecure* for encrypted SMS. The problem from a user experience perspective is that it requires a s

The crypto solution he proposes is the same as employed by TextSecure* for encrypted SMS. The problem from a user experience perspective is that it requires a secondary channel of communication like a face-to-face meeting or a secondary IM service for key exchange. * https://play.google.com/store/apps/details?id=org.thoughtcrime.securesms https://play.google.com/store/apps/details?id=org.thoughtcri...