Tactile Feedback

[Jonathon Suggs]

I had mentioned this before, but it didn't get much conversation since 
it was deep within a thread.  Anyway, since there are no hardware 
buttons for input, could we not use the vibrator to give a quick pulse 
so that you still have some feedback as to when a button is pressed?  It 
might go a long way in making hardware keyboard less entry more acceptable.

http://www.time4.com/time4/microsites/popsci/howitworks/cellphone_motor.html

Any thoughts?