If you are looking to boost your Wi-Fi signal at home, Interesting Engineering and KipKay have a do-it-yourself project which promises to help.
The solution requires an empty beer/coke can, a cutting tool (knife or strong pair of scissors), pliers, and Prestik.
Step 1: Wash out the empty can and use the cutting tool to remove the base of the can. Repeat the process at the top of the can, but do not cut all the way around – leave a 3-4cm piece attached.
Step 2: On the opposite side of where the attached piece is, cut down the middle of the can and fan it into a U shape.
Step 3: Take the cut can and place the opening at the top (where you normally drink from) over the antenna on your Wi-Fi router.
Step 4: Fix some Prestik between the base of the antenna and the can to hold it in place.
Step 5: Enjoy an improved Wi-Fi signal by facing the open end of the can in the direction of the devices which are receiving the signal.
The video below gives an overview of how to make the Wi-Fi booster at home.
How it works
The reason the can booster works is thanks to the fact that a Wi-Fi signal is a radio wave.
The signal the router broadcasts becomes weaker the more distance it has to cover and obstacles it has to overcome. By channelling the signal with the can, you improve its strength in that direction.