Are your neighbors stealing your Wi-Fi signal? Paint your walls!
If you are not too computer-savvy, and are unable to configure the security settings of your home wireless network, but are able to give a hand of paint on your wall, Tokyo University has the solution for your problem: a special paint that blocks Wi-Fi waves!
This particular paint contains an iron-aluminum oxide, which resounds at exactly the same frequency of Wi-Fi or radio waves, thus effectively absorbing and blocking these waves from reaching the outside. By painting the walls of a room like that, the signal cannot go outside, nor can any other signals reach you from the outside.
For businesses, this might be a cheap and effective way to prevent hackers from attacking their computers, spending just over 10 Euro for one Kg of paint, instead of investing thousands in complicated and expensive encryption systems.
Besides data security in offices, such a shielding system could effectively find a place in several other environments and for several applications, such as for example disabling mobile phone signals inside a cinema or theatre, or even, still in a cinema, protecting the video transmission from any interference with other projectors.
Or more simply, it could be possible to protect your health from electromagnetic waves coming from the outside. At the current stage, the shielding paint is still in its development phase, especially concentrating on studying the effects on human body, caused by retaining electromagnetic waves within a room.
Of course, if you would like to use this special paint to make your wireless network secure, I would recommend setting up also a software protection with a security key, you never know…
