Wikipedia
MessagEase is an input method and virtual keyboard for touchscreen devices. It relies on a new entry system designed by Saied B. Nesbat, formatted as a 3x3 matrix keypad where users may press or swipe up, down, left, right, or diagonally to access all keys and symbols. It is a keyboard that was designed for devices like cell phones, mimicking the early cell phones' limited number of 12 keys.
The large letters contain the most common letters, and these letters are accessed by a tap. The small letters contain less common letters, and these are accessed by a slide. There's a green trail that shows the path of the finger. The keyboard supports multiple user dictionaries, used for word prediction and correction.
The software is developed and patented by ExIdeas, based in Belmont, California. It was first released in 2002 for the Palm, along with a paper in 2003.