what could they do? well for spread, they could make signal users purchase a signal device to use signal, but that exacerbates the security concerns, and may not be practical for economically disadvantaged people/regions. 5/
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could ship the signal server software to your phone? again security concerns and then it's even more security concerns.
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what I think we need is to avoid generic turing style compute as the core of edge devices.

I think we go to custom chips that fundamentally provide the service in question and are truly hard to modify to do anything else.
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