New Paint Stops Wi-Fi Stealing Neighbors
So you ask, “why hasn’t this been developed already?” Well, until now most wave absorbing materials have only been able to block frequencies up to 50Ghz, while modern wireless communication uses frequencies above 100GHz. The structure of this new material distorts the bonds between oxygen and iron, allowing for absorption for frequencies up to four times higher than before.
Sounds like some fantastic stuff. So save the trouble of turning your house into a bunker equipped with Faraday cages and just paint your walls with a fresh coat of paint.