Keyboard Clues
From: Technology Review - May 2005 - page 23

Trying to use keyboard shortcuts in an unfamiliar software program is like
trying to use a physical shortcut in an unfamiliar neighborhood: your're
likely to get lost. San Jose, CA - based United Keys will soon release
technology designed to make shortcuts - and therefore software - more usable.
The startup is developing small liquid crystal displays that are built into
the keys of a PC keyboard. Each screen displays an icon that indicates the
function of its key for whatever program is running. The system can also
sense what users are doing within a program, anticipate which functions they
might need next, and assign those functions to handy keys. The firm says
enhanced keyboards could be available this year. 

Links:
United Keys
http://www.unitedkeys.com/

Start-Up United Keys Substantially Reduces Computer Program Learning Curves
 with Innovative User Interface Technology
http://biz.yahoo.com/bw/050418/185984.html?.v=1