I saw this in action in the Beijing subway in China...its really interesting to see the first time but after seeing it EVERYDAY it gives you seizures (the variable speed of the train prevents the LEDs from flashing like a normal screen) but its still pretty cool the first time I saw it.
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Jeff @ Dec 3rd 2007 2:10PM
I saw this in action in the Beijing subway in China...its really interesting to see the first time but after seeing it EVERYDAY it gives you seizures (the variable speed of the train prevents the LEDs from flashing like a normal screen) but its still pretty cool the first time I saw it.