Researchers invent ‘anti-Wi-Fi’ paint that blocks wireless signals | ZDNet

Researchers invent ‘anti-Wi-Fi’ paint that blocks wireless signals | ZDNet

University of Tokyo researchers have developed special paint that can block wireless signals.

By mixing aluminum-iron oxide particles into paint, the researchers have invented paint that blocks radio frequency in higher spectra where Wi-Fi and other higher-bandwidth communications occur.

Though most Wi-Fi technologies operate at 2.4GHz and 5GHz, the special paint can block frequencies all the way up to 100GHz, the researchers said.

via Researchers invent ‘anti-Wi-Fi’ paint that blocks wireless signals | ZDNet