Tap Code
Each letter as two clusters of taps — row count, then column count. C and K share a cell.
Output
Visualization
Each letter as two clusters of taps — row count, then column count. C and K share a cell.
A classical cipher — the kind of thing people used before computers. Fun and educational, but not cryptographically secure. Hit Share link to copy a URL that encodes your current state — recipients open it and their browser reconstructs everything locally. Nothing touches a server.