Using aluminum to direct and enhance the Wi-Fi internet signal is one of those tricks that fell into common sense - Olhar Digital already taught how to do. And now there is a scientific ballast that confirms the idea's effectiveness.

Researchers at Dartmouth University carried out a series of tests to improve the wireless internet using aluminum and proved what you already knew if you ever did it at home: it really works.


Compliant carry TechCrunch, they experimented with several directional antenna options and also a solution that involved placing a can of beer behind the router to point the signal in the desired direction.

After some tests, the researchers came up with formats considered ideal, then designed them with the help of 3D printers in a program called WiPrint and covered the objects with aluminum foil.

The result was to be able to make the signal reach only where it was wanted to reach. It is possible, for example, to form a reflector capable of preventing the internet from leaking out of the window or being more powerful within a specific environment.

"With a simple investment of about $ 35 and the necessary coverage specifications, a wireless reflector can be custom-built to overcome antennas that cost thousands of dollars," said Xia Zhou, assistant professor at the university.