Wi-Fi, one of the most popular standards for wireless Internet access, had been seen as a means of connecting more people at a relatively low cost, and city leaders across the United States had been rushing to use the technology for "digital inclusion" programs for low-income residents.
But cities and companies are finding the economics more difficult, with many expensive access points needed and relatively small numbers of subscribers signing on.
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"I think it's a troubled market," said Daryl Schoolar, senior analyst at the research firm In-Stat.
"Some thought a lot of people would rush out with laptops and would use it.
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But Wi-Fi doesn't really penetrate buildings well. And people use Wi-fi mainly in hotels, airports and cafes."
Although some privately operated