> If that’s correct, it required decryption. Probably but not _necessarily_ - if someone's vocal cadence was somehow visible in the encrypted modulation then t

> If that’s correct, it required decryption. Probably but not _necessarily_ - if someone's vocal cadence was somehow visible in the encrypted modulation then that could be an identifier. https://en.wikipedia.org/wiki/Traffic_analysis https://en.wikipedia.org/wiki/Traffic_analysis