It’s like a superpower. I can, with little effort, write notes that the ‘kids’ nowadays cannot read.
encoding can be much faster than decoding, going more complicated to beat frequency analysis is just going to slow your own decoding/reading down
Yes it does thwart people that should have already been bounced by the cultural expectation of not reading your journal, but it doesn’t take a state actor to break it, just someone slightly above curious
I created it for a tabletop rpg I'm running, my friends (a few programmers and a math major) couldn't decode it after a few weeks of trying without several hints and a few-pages-long sample, which is good enough for me. I've prepared a lot of puzzles for them, and this was significantly harder than a simple cipher with letter substitution, because even separating it into letters to feed it into frequency analysis isn't obvious.
Of course if I used it for journals or sth like that it would be easy to crack, but I'm mostly using it to write very short notes.
Have a crack if you want :) https://live.staticflickr.com/65535/52366236038_9b3a642015_b...