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Researchers create anti-WIFI paint

Researchers at the University of Tokyo have created a paint that can block wireless signals...

October 3, 2009 10:48 by



Researchers at the University of Tokyo have created a paint that can block wireless signals, giving security-wary WIFI internet users peace of mind, reported the BBC last week.

The paint contains an aluminium-iron oxide that blocks the WIFI data by emitting an identical frequency. The paint may cost $16 per kilogram.

Shin-ichi Ohkoshi, who is leading the project, said: “By painting a solution containing our magnetic particles on the walls, you would quickly, and effectively, shield the room from stray electromagnetic radiation from outside.”

Although anti-WIFI paints are nothing new, Ohkoshi’s paint is the first to block frequencies at 100GHz (gigahertz).

Ohkoshi, however, is unsatisfied with his achievement: “I’m working on a material that can absorb a larger range of frequencies. We are capable of making a paint that can absorb over 200 gigahertz”

He is also working on using the frequency absorbing technology on clothing: “We’re not sure about the true effects of electromagnetic waves, in this range, on the human body.”

“We’re assuming that excessive exposure could be bad for us. Therefore we’re trying to make protective clothes for young children or pregnant women to help protect their bodies from such waves,” he said.



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