@Jackcooper to [email protected] • 1 year agohow did military commanders in olden times send instructions across hundreds of miles without concern of forgery or interception?message-square39arrow-up1129arrow-down11file-text
arrow-up1128arrow-down1message-squarehow did military commanders in olden times send instructions across hundreds of miles without concern of forgery or interception?@Jackcooper to [email protected] • 1 year agomessage-square39file-text
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•1 year 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!