Anti-wi-fi paint will make it harder to scam free internet

The days of scamming free wireless Internet may soon be over. Researchers at the University of Tokyo have developed a paint that blocks wi-fi signals. So if a room is painted with this stuff, only computers inside the room would be able to pick up a wireless signal originating there. At a projected cost of $16 a kilo, the paint would be a cheap way of keeping hackers away from using your wireless to download dodgy files. The paint is infused with an aluminum-iron oxide that blocks all radio signals at 100Ghz, the frequency at which wi-fi transmits. As ingenious as this sounds, there are a couple of downsides. First, it won't protect the user from online threats, and of more importance to travelers, it will stop people from scamming free Internet while on the go. Perhaps v should tell the nice folks at the University of Tokyo "thanks but no thanks"?

Ref : @ internet magazine!