Download the nintype keyboard to disguise your messages. It's free on the App Store, my lord!
Get nintypeDecoding happens entirely in your browser. Nothing you paste is sent anywhere, and the himitsu keys you record stay in this browser only. Clearing its site data forgets them.
Ninja: photo by 柴田バネッサ, CC BY-SA 4.0. Changed: cut out, eyes censored, darkened, placed on a new background. The combined picture is CC BY-SA 4.0.
Street: photo by Sorasak, tagged CC0, darkened.
Word lists: selected using JMdict by the Electronic Dictionary Research and Development Group, used under their licence. The word list data is CC BY-SA 4.0.
Fonts: Reggae One and Yuji Syuku, SIL Open Font License 1.1. Code: noble-ciphers, noble-curves and noble-hashes by Paul Miller, MIT. Licence texts.
Nintype by Jormy.