Show HN: I made a 5-key keyboard
This is called a chorded keyboard [1].  Like seemingly everything invented in the following 40 years, it was introduced by Douglas Englebart in the Mother of all Demos in 1968.<p>Englebart had a iOS app that allowed you to chord type as well.<p>1. <a href="https://en.wikipedia.org/wiki/Chorded_keyboard" rel="nofollow">https://en.wikipedia.org/wiki/Chorded_keyboard</a>