The scene is repeated in many homes. Between viral myths and improvised solutions, more and more users are trying homemade tricks to improve WiFi connection. But does what goes viral on social media really work or is it just part of digital folklore?
He router It is the center of the home network: the signal they use is distributed from there cell phones, computers and televisions. However, its performance does not depend only on the contracted internet plan, but also on the physical environment in which it is located. In this context, different everyday objects can influence how the signal propagatesalthough not always in the way you think.
Does putting a coin on top of the router help to improve the Wi-Fi signal?
One of the most widespread tricks proposes place a coin on top of the router. Explanations vary: some maintain that it improves the signal, others that it helps stabilize the equipment.
From the technical point of view, there is no evidence demonstrating improved connectivity. Organizations such as the Federal Communications Commission (FCC) explain that WiFi signals operate at frequencies where small objects, such as a coin, do not have the ability to significantly alter their behavior.
The theories that circulate are usually based on the conductive properties of metalsuggesting that it could act as an antenna or reflector. But in practice, those kinds of effects require precisely designed structures. A coin, due to its size and shape, is far from fulfilling that role.
Where it can be useful is in something much simpler: if the router is light and the cables move it, adding weight on top can prevent it from moving.
Aluminum foil: a scientifically based trick
Unlike currency, Aluminum foil does have a physical basis that explains its use. This material can reflect electromagnetic waveswhich allows you to modify – to a certain extent – the direction of the WiFi signal.
Research and experiments released by institutions such as the Massachusetts Institute of Technology (MIT) showed that metal surfaces can be used to redirect the signal in controlled environments. In a home, this can serve to prevent WiFi from “escaping” to the outside or to concentrate it in a specific environment.
However, it is not a magic solution. If applied without criteria, it can also generate areas without coverage or worsen the overall distribution of the network.
Objects that do affect the signal (even if they are not seen)
Beyond the viral tricks, there are everyday items which have a real impact on WiFi. Some materials directly interfere with the propagation of waves. He aguaFor example, absorbs signalso aquariums or large containers can weaken it. Metal surfaces, such as shelves or furniture, tend to reflect it and alter its path.
They also influence electronic devices. An operating microwave can interfere with the 2.4 GHz band, causing outages or slow speeds. Even seemingly harmless objects, such as large mirrors, can modify the signal path by reflecting it.
In contrast, open spaces, without obstacles and with the router in an elevated position, favor better distribution of coverage.
WiFi: the key is still the location
The Wi-Fi Alliancein charge of certifying wireless technologies, insists that the most determining factor to improve WiFi is not adding objects, but correctly locate the router.
Place it in a central point of the houseaway from thick walls or metal structures, usually has a much greater impact than any homemade trick. It is also important to avoid enclosing it in furniture or covering its grilles, as overheating can affect its performance.
There are locations that directly they play against. The cocinafor example, combines interference and heat; the windows they allow the signal to disperse outwards; and the corners or closed spaces limit coverage.
On the other hand, many times the problem is not the power of the router, but the noise around. Devices such as microwaves, cordless phones or even neighboring routers can interfere, especially in the 2.4 GHz band.
Some simple actions help: move the router away from appliances, avoid placing it near televisions or large equipment, and if the equipment allows it, change the WiFi channel from the settings.
In that sense, the Federal Communications Commission (FCC) explains that these interferences are one of the main causes of poor signal quality in homes.
It is clear that the small changes in the house they can make a difference. Opening doors, avoiding blocking the router with large objects, or even moving it a few centimeters can change how the signal travels.