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I think the colour and motion is more effective at making people notice. And putting these things up is still expensive so the extra hardware costs do not matte

I think the colour and motion is more effective at making people notice. And putting these things up is still expensive so the extra hardware costs do not matter so much. And I don't know where to buy giant e-ink displays, and how much they are.

derekp7 12y ago
That is actually part of the problem -- until the patents run out for e-ink, we won't see these advanced applications.