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""We're going to transfer power without any kind of wires," says Dr Hall, now Chief Technology Officer at WiTricity -- a start-up developing wireless "resonance" technology. "But, we're not actually putting electricity in the air. What we're doing is putting a magnetic field in the air.""

There's a subtle but steady shift happening in classrooms across the nation. More and more, schools are seeking efficient, cost-effective alternatives to using paper and supporting over-priced textbook companies. One way is by supporting technology in schools. Schools are seeking ways to upgrade and sustain wireless infrastructures and integrate mobile devices that broaden teaching and learning opportunities. Similarly, schools are decreasing their dependency on paper and incorporating digital workflows.

Los Angeles school officials are acknowledging a new looming cost in a $1-billion effort to provide iPads to every student: keyboards. Officials so far have not budgeted that expense, but they said the wireless keyboards are recommended for students when they take new state standardized tests. If keyboards were to be provided for all 650,000 students, the cost could be more than $38 million at current retail prices. It's not clear if the district plans to provide keyboards for all, and officials were not prepared to estimate the cost during a meeting last week of a Board of Education committee that is tracking the iPad initiative.

When deciding what to filter, the IT department considers two questions: 1) Is there a relevant ­educational need for the site? and 2) Does the site potentially expose students to inappropriate material? "The toughest area to assess is social media," Vomastek continues. "Right now, we block Facebook and Twitter during the school day but ­allow users of our guest wireless network to access them during non-school hours. There's no one choice that will make everybody happy."

"The Google Glove is filled choke full with electronics. These include cameras on the fingertips, compass, gyroscopes, accelerometers and other motion detectors on the fingers, CPU, a bunch of RAM and storage in the palm of your hand, and (wireless) communication chips on the back. Maybe even a small battery band around your wrist."

A course driven by 20 practical questions about wireless, web, and the Internet, about how products from companies like Apple, Google, Facebook, Netflix, Amazon, Ericsson, HP, Skype and AT&T work.