"Airlines around the world now spend millions of dollars annually upgrading their inflight entertainment systems, but iPods and other mobile entertainment gadgets could render all that useless.

Besides bland airline food, one other certainty for most long-haul travelers flying in economy class has always been time passed with movies and games on a minuscule 5-inch screen provided by the airline.

However, with USB ports and a power socket increasingly common even for economy class passengers on carriers such as Singapore Airlines Ltd and Cathay Pacific Airways Ltd, the concept of in-flight entertainment could change. "

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