Special Paint Blocks WiFi Signals

A University of Tokyo team has developed a special paint that can block out WiFi signals. The substance, which costs about £10 (~$16.00) per kg, contains aluminum-iron oxide that resonates at the same frequency. Future applications may include keeping wireless networks secure, shielding for hospital rooms, blocking phone calls during social or business events and making clothes that protect humans from electromagnetic waves.

Via BBC

Read More in: Wireless Network

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