War spurs innovation, and U.S. soldiers are seeing a lot of it. How well is the new equipment performing in Iraq? href="http://www.popsci.com/popsci/slideshow/2006/c87d8069b864b010vgnvcm1000004eecbccdrcrd.html"
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I love the fact that more and more devices are sporting built-in Wi-Fi—the Sony PSP, smartphones, even Kodak’s EasyShare-One digital camera. The lone hitch: Wi-Fi is useless without a hotspot. Sure, thousands of spots are available, but few are free, and coverage is far from ubiquitous. What if you could marry the short-range power of Wi-Fi with the huge coverage areas of high-speed cellular services such as EV-DO to create a portable hotspot?