How large is the market?
I confess to not having listened to the interview but I wonder how big the market for this is? Air -interface encryption for both GSM and CDMA is extremely good and as far as I know there has not been a single reported incident of it being compromised outside a lab environment.
Even law enforcement agencies take their interception at the mobile switch exchange, obviously you don't have to follow the person around but also because they don't have the technology to decrypt the air-interface on the fly.
With e-mail, which has no encryption, what proportion of users use encryption like PGP? So in this case with already very high levels of security who wants more? Seems to me it would appeal only to those who are trying to avoid lawful interception of their conversations?
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