How does it work?
Well… to point out: it cleans the enviromental conditions which causes slowing down of radio waves.
It works with the speed of light and can pass walls.
Even Superman cannot do such things!
It lasts around one hour. Then you have to use again.

But be careful by using!
It may cause cancer.

For those who don’t believe me, you can find arguments (based on mathmatical expressions) on: http://j-walk.com/other/wifispray/