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Here is a link to his TED talk

http://blog.ted.com/2011/08/02/wireless-data-from-every-ligh...

It seems like a good idea but he does not address how to get the data to each light fixture

This is an open problem. The dream scenario is to utilize power line communications, but that technology has its own set of issues.

I already use Ethernet over household wiring to get data from the uverse router to my wife's office. I think it's 200 Mbs, but whatever, it's completely transparent to use. It may be the only completely foolproof piece of hardware in the house.

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