Alternative 'TouchType' Text Input Approach
Tuesday, May 12, 2009 at 6:05PM touchtype proposes a new approach to text input on a touchscreen. It takes predictive text to another level — suggesting a list of words which you are probably going to type next. With each letter you input, the list is updated. The application is not yet available, so I've not had an opportunity to play with it, but it does look reasonably good.
However, it seems to me that treating touchscreens like a real-world keyboards is flawed from the start. This is because the strengths of touchscreens is hi-resolution, real time positioning data for any finger dragging along the glass. The weaknesses of touchscreens is that initial point of touch — the system basically has to a) second guess where you meant to touch b) second guess that you mean to tap at all. I would propose an interaction where you only lift your fingers for unusual events, and design the system to be almost totally controlled from dragging on an XY plane. Swype gets closer to this idea of continuous input — we're well overdue for a change, as I've written about before.
Keyboard, Touch, iPhone, interaction, predictive, touchscreen in Trends