Sound from texting

[jim bell]

Peter Wright's book, "Spycatcher" from about 1987 described an early version of this, at least in the context of a teletype printing.         Jim Bell
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Can hackers tell what you’re texting or searching just by listening?: https://nypost.com/2019/06/05/can-hackers-tell-what-youre-texting-or-searching-just-by-listening/

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