http://www.dailytech.com/Nanogenerat...ticle10696.htm
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The idea is that fiber-based nanogenerators would be woven into the fabric of a shirt and the friction cause by moving around would be transferred into energy to power the device. Scientists even say that simply standing in a breeze could generate all the power your iPod needs to play indefinitely...
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...According to Wang, the researchers estimate that a fabric made with this process would generate around 80 mW of power per square meter of fabric. The researchers see the technology being used by hikers and soldiers in the field to power sensors and other electronic devices.
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There is a drawback with this design, however...
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Wang and his team have a major hurdle to overcome before the technology can be put into use. The zinc oxide required to create the electricity degrades when it gets wet. Research into a type of coating that will keep the zinc oxide from degrading in the wash or rain is underway.
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But that isn't too much of a problem, if they would learn to communicate with each other....