Not that long ago, it was difficult to find an airport that offered wireless Internet access, and generally there was a charge for the service. Gradually, airports have started offering free Wi-Fi. "It's almost become a required amenity," said Perry Cooper a representative of Sea-Tac airport. "Passengers expect it now. Especially in places like Seattle where folks are very tech-savvy. In fact, it's been our number one customer service request for years."

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