The following can be done in any of several ways including with pencil and paper.
“impossible to crack if used correctly.”
Good stuff. I remember that one-time pad stuff from back in the day. undetectable for normal ops. one can throw in another layer of tac-ops codes for well, tac ops.
Next is to introduce this into the culture for now and future generations. Meaning, the kids. Perhaps people should start in their own families; making it a game to play with the kids to get them use to it(better than having them waist their brains away on tweeting.
We’ll may be long-gone when time comes where they have to use it, but this is the kind of low-level technology that we should not forget in the digital age. For as we now know, the digital world is now a double-edged sword.