@[email protected] to [email protected] • 2 years agohow did military commanders in olden times send instructions across hundreds of miles without concern of forgery or interception?message-square42fedilinkarrow-up1118
arrow-up1117message-squarehow did military commanders in olden times send instructions across hundreds of miles without concern of forgery or interception?@[email protected] to [email protected] • 2 years agomessage-square42fedilink
Let me know if there is a better community for this type of question. I am still learning my way around.
minus-square@[email protected]linkfedilink10•2 years agoTo add to other comments: There are ways of folding envelopes or letter packages that are destructive in opening, so that tampering could be noticed. The practice is called letter locking, here’s some links: https://en.m.wikipedia.org/wiki/Letterlocking https://arstechnica.com/science/2021/03/locked-for-300-years-virtual-unfolding-has-now-revealed-this-letters-secrets/
To add to other comments:
There are ways of folding envelopes or letter packages that are destructive in opening, so that tampering could be noticed.
The practice is called letter locking, here’s some links:
https://en.m.wikipedia.org/wiki/Letterlocking
https://arstechnica.com/science/2021/03/locked-for-300-years-virtual-unfolding-has-now-revealed-this-letters-secrets/
I did that as a kid in school passing notes!