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 Keyboard navigation 
probably makes some sense for the administrative functions:  tab through 
buttons, space to press button, etc.  But before we get in a knot about 
this, just how far out of calibration can these things really get on their own 
before we just declare the touch screen broken?  I mean, its a big button, 
and you can always use some smarts and touch a little to the left or right based 
on feedback.  If the screen is going out of calibration to the point that 
this technique doesn't work, something is seriously wrong. 
Show me the 
specs. 
Ken 
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