Tech You Can Use: Power Without All Those Wires

I'm at the Consumer Electronics Show in Vegas, where thousands of companies are showing off their inventions aimed at making your lives easier. My favorites so far: little gizmos that let you charge your phone, your iPod, or even power motion-detected lights on your garage, without ever needing to find a plug.
The nPower PEG (Personal Energy Generator) feels like a really light barbell. Stick it in your backpack or a really, really big pocket, and you can charge that cellphone or your little digital camera while you hike in the Rockies.

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Or there's these little gizmos from the UK- little cases made for iPhones and Blackberries. All you need is a light source, and your phone's got power to go.

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