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A comment on Now, I can see wifi signals.

Re:Now, I can see wifi signals by devindotcom on Saturday February 14, 2015 @08:16PM (#9051429)
This was done in a pretty spectacular way by Luis Herman a little while back:

http://www.itsnicethat.com/articles/luis-hernan-digital-ethe...

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Re:Now, I can see wifi signals by bithive123 on Saturday February 14, 2015 @08:41PM (#9051488)
Also see: http://www.nearfield.org/2011/02/wifi-light-painting
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