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Aaron Zauner azet at azet.orgi'm also still following this, but it seems to be a dead end. off-topic: current smartphones already have the capability to run sms[1]/voice encryption software or voip with encryption [2]. [1] https://github.com/whispersystems/textsecure [2] https://play.google.com/store/apps/details?id=com.privategsm.beta