Evaluation of SpreadKey system with motor impaired users

Abstract

We recently presented a new soft keyboard: SpreadKey. The keyboard is based on a QWERTY layout and dynamically recycles the needless characters. The needless characters are determines by a predictive system in function of the previous input characters. The recycling aims at providing several times the characters with a high probability to be typed. This article resume the concept of SpreadKey and explain the experimentation we conduct to evaluate its. The experimental results show that SpreadKey is an interesting solution to assist motor impaired users (with motor impairment of the superior limbs) in the text input task. © 2010 Springer-Verlag Berlin Heidelberg.