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Wi-Fi, Mano a Mano

Imagine a world where using Wi-Fi doesn't mean sacrificing security. It could happen.

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This story appears in the March 2010 issue of Entrepreneur. Subscribe »

Can you remember when there was no at the big coffeehouse chains or the major airports or popular hotels? When it wasn't in most laptops, and if you were looking for a public Wi-Fi signal, you could go all day without finding one?

Now, Wi-Fi is anywhere businesspeople are likely to gather, in the office or not. It's estimated that half a billion users worldwide use Wi-Fi on about 2 billion shipped devices, according to the Wi-Fi Alliance in , , which certifies and promotes Wi-Fi technology standards.

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