Not on my Wi-Fi: anti-wi-fi paint helps keep your connection to yourself

This is news a lot of cheapskates aren't going to like, especially the kind of cheapskates who routinely poach on other people's wireless connection. There's now a paint you can use that will block Wi-fi from going through walls and into the arms of another, unauthorized, computer user.

According to this tech blog, The University of Tokyo has developed a paint that is allegedly able to block radio frequency in higher spectra, where Wi-Fi and other, higher-bandwidth communications take place. Most Wi-Fi technologies operate at 2.4GHz; the Tokyo pain can reportedly block frequencies all the way up to 100GHz. A 200GHz-blocking pain is also in the works, according to this report.

Grumpy Wi-Fi owners might be rejoicing (presuming this stuff ever gets to the market, and isn't $100 a gallon). Likewise theater owners, who will surely be interested in squelching that pesky cell-phone problem once and for all (the paint also blocks in the lower frequencies that cell phones use.)

But I wonder what this does to the dream of free and unfettered Wi-Fi for all?


Read Full Story

Markets

DJIA 25,299.92 112.22 0.45%
NASDAQ 7,870.89 51.19 0.65%
NIKKEI 225 22,204.22 -151.86 -0.68%
HANG SENG 27,323.59 -429.34 -1.55%
DAX 12,347.43 -11.44 -0.09%
USD (per EUR) 1.13 0.00 -0.22%
USD (per CHF) 1.00 0.00 0.39%
JPY (per USD) 111.17 -0.07 -0.06%
GBP (per USD) 1.27 0.00 -0.07%