Most probably, whenever you put on your wifi, your main focus is not on using it but preventing any outsider from breaking into your WiFi and him Surfing FaceBook with you paying all the Bills.
Now, no more. Here come Anti-WiFi Paints, when rooms are coated with it they prevent, any WiFi Signals form entering from outside the house but Preventing the WiFi Signals from outside to escape outside.
The Paint is prepared using aluminium-iron oxide which has the same frequency as the Wi-Fi signals. These paints can absorb upto 100GHz (GigaHertz) which is well enough to absorb, Wi-Fi Signals, Fm Radio, Cell Phone signals too.
Shin-ichi Ohkoshi who is from the University of Tokyo and the lead for this project has pretty impressive ideas for the project. According to him these paints can be used in Future in Cinema Halls to prevent Cell Phone from Ringing in Cinema Halls (Oh God, in India we need it right now!).
This paint will available at a price of £10 per kilogram which is not much. So With just one paint, you get to see your neighbour cry next time you see them!
omg