Darren New <dne### [at] sanrrcom> wrote:
> You can combine these. Decades ago I saw a technique where the screen had a 
> number of letters each of which were either highlighted in turn, or which 
> were flashing at different rates.  Which ever one you were looking at would 
> make EEG signals in your visual cortex that could be correlated to the 
> letters.  So you just look at the blinking letters and it spells out what 
> you gaze at.

  I think the eye tracking technology is safer because it doesn't give you
seizures... ;)

-- 
                                                          - Warp

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