[Jamestown1630]

Who puts highly classified info in a physical packet and sends it by courier?

Are you kidding? I bet a LOT of really private stuff goes around that way, these days. In DC especially, I'd count on my *stuff* being kept private by bicycle courier far more than via any electronic method.

[Flick Lives]

I’d count on my *stuff* being kept private by bicycle courier far more than via any electronic method.

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What’s to prevent the courier from making his own copy of the document?