With no upper limit on the number of keys on which each combination is based, the keyboard can be used for typing an unlimited variety of characters.

The same efficiency-driven approach has been followed when assigning combinations of taps and slides to all other letters, numbers and signs: the most frequently used ones are also the quickest to produce.

Other features include immediate access to characters other than letters without the need to recall additional screens, by applying the relevant combinations of taps and slides.

The keyboard also includes a suite of editing tools with in-built commands allowing to precisely select, copy and paste text.

He learned some skills that allowed him to write basic software for testing purposes and to further develop the keyboard.

ETAOI speed helps the user learn how to type quicker, with the training material consisting of the most popular words, as well as pangrams (sentences using all letters of the alphabet).

[10] The keyboard is currently available on the Google Play store and includes versions for smart phones and tablet computers.