Really oversized small keyboards
People have become very good at typing on ITU-T text entry interfaces – the common multiple key-press interface found on most phones. With the rising popularity of sub-notebooks, it makes me wonder if the form factor wouldn’t be better suited to follow the ITU-T input mode rather than squeezing in the traditional QWERTY layout. This would mean more space for the buttons, possible two hand, faster typing (with practice, of course). It could also leave space for more useful keys, like arrows, and an enlarged trackpad.

