When network security is paramount, such as in businesses and office setups, it is a good idea to limit your Wi-Fi network to only the area where it is needed. Wi-Fi signals operate over radio waves, ...
I just did some testing and I'm again stunned that wireless equipment intended for home users to just plug it in and not need to know anything past that has this issue - the direction that you face ...
One type of electronic device to especially avoid is the microwave, which emits a strong signal in the 2.4GHz band, the same wireless band your router operates in. Be careful not to stick your router ...