Organizers pulled it off by providing each member of the audience with a ten-inch electronic paddle wired to a central computer and outfitted with nine full-color LCD squares.
Use these apps to follow your favorite athlete, get quick results, socially network about the Olympics, play games, or even look up rules for obscure sports.
The impact of the Olympics on communications traffic globally from this year's games could be more significant than any in the 116-year history of the modern games.
Security companies warn of burgeoning scams piggybacking on interest in the Olympics
The one-off nature of an Olympics and its scale are what provide the learning curves that leave that legacy, says Pennell.