A team of University of Tokyo scientists headed up by Shin-ichi Ohkoshi have invented a paint that can block high-frequency electromagnetic waves--specifically, those given off by high-speed wireless signals.
One of the most irritating aspects of wireless Internet access is the question of the best way to secure it. After all, anyone who's ever 'borrowed' Internet from a neighbor or local business knows how simple it is. Such a paint is a simple and inexpensive solution to the issue of Internet security.
There have been other wave blockers previously invented, but PC World says that the paint invented by the University of Tokyo team of scientists uses a brand-new aluminum-iron oxide that is capable of blocking waves with a frequency almost four times higher than any other blocker in existence.
Tech-Savvy House Paint
Tokyo Scientists Invent Paint That Blocks High-Speed Wi-Fi Signals
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