[Usability] Keyboard technology enhancement, usability implications?

[Tom Conneely <tom conneely gmail com>]

Have a look at this idea for a new type of keyboard, which uses
keyboards with tiny displays on each key allowing a keyboard which can
change dynamically to the user's needs.

http://www.artlebedev.com/portfolio/optimus/

I know this probably won't make it to the market in a while, and even
then probably won't be widely used for an even longer period but it
fits the category of cool and deserves a small bit of discussion
atleast.

your thoughts?
-- 
tom.c