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Even if you want to remove Wi-Fi from your home (and you don’t have to!), You’d better switch to a wired router and ditch all your Wi-Fi hardware. Skip the “router cages” and “router covers.”
“Block Wi-Fi Radiation” means “Block Wi-Fi”
EMF shields or wireless “router guards” promise to block Wi-Fi radiation. There is only one problem: “Wi-Fi radiation” simply means “Wi-Fi radio waves”.
That is of course not new: AM and FM radio, for example, also use radio waves. That includes walkie-talkies, cordless phones, wireless baby monitors, and many other common technologies we’ve been living with for decades.
Since Wi-Fi is just radio waves (a type of radiation), blocking Wi-Fi radiation simply means blocking Wi-Fi. When a router guard promises to “block 85% of the Wi-Fi radiation,” that’s just another way of saying that it keeps your wireless router running at 15% efficiency.
Wi-Fi is not dangerous
Wi-Fi radiation is not dangerous to you. We recommend that you read our full explanation of why Wi-Fi radiation is not dangerous. In short, the dangerous type of radiation is ionizing radiation, such as X-rays. Ionizing radiation has enough energy to ‘ionize’ atoms and other molecules by knocking an electron out of their orbit.
However, Wi-Fi counts as “non-ionizing radiation”, like AM and FM radio. There is no scientific evidence that Wi-Fi radiation is dangerous, just as there is no evidence that the radio waves used by walkie-talkies (in other words, the radiation produced by walkie-talkies) are dangerous.
RELATED: Don’t worry, Wi-Fi isn’t dangerous
What does an EMF shield or “router protection” do?
These devices are a type of Faraday cage that you place around your router. A Faraday cage is a housing that blocks electromagnetic fields. That is why it is called an “EMF shield” – it functions as a shield against electromagnetic fields (EMFs).
This is a fancy way of saying that a “router protector” that you put around your router will only interfere with the Wi-Fi signal, either severely weaken it or block it completely.
Why would anyone want to do this? If they thought Wi-Fi was dangerous, maybe such a device would be valuable! But knowing that Wi-Fi is not dangerous, we see that there is little point in such a device.
Such devices are unfortunately widely advertised online, including on Amazon. While we absolutely believe in everyone’s right to buy these types of products if they want to – that’s freedom, after all – we believe you should know that these products are a waste of your money. Even if you believe the premise that Wi-Fi is dangerous, these Wi-Fi shields don’t make much sense.
Again, Wi-Fi is just radio waves, which is radiation
Wi-Fi is just radio waves, and radio waves are a type of radiation. A Wi-Fi router uses electromagnetic frequencies, also known as “radio waves” or “Wi-Fi radiation,” to communicate with your devices and give them access to the Internet. That’s all it does.
Operating a Wi-Fi router and placing it in a Faraday cage is like setting up a radio tower and locking it in a cage that prevents people from receiving the signal. It does not make any sense.
When router security works, your Wi-Fi will get worse
If you take a look at the reviews for such devices on Amazon, you will see many people leaving one star reviews complaining that the Wi-Fi shield made their Wi-Fi worse. Maybe now it will only work in the same room as the Wi-Fi router, when without the Faraday cage, the Wi-Fi provides a strong signal in every room of their house.
It is designed that way. That’s how it works! It works by suppressing your WiFi signal. Less WiFi radiation escapes from the cage, making your WiFi weaker.
But some router guards promise strong WiFi!
If you click around and look at these products, you will notice that some router guards promise not to disturb your Wi-Fi. They promise to reduce the WiFi radiation while providing a strong signal at the same time. Some products even have reviews saying, “This product works, unlike other router protectors that made my Wi-Fi worse!”
How is this possible?
Well, maybe the manufacturer and router guard is lying will even make your wifi worse once you set it up.
However, if a particular router guard doesn’t interfere with your Wi-Fi signal at all, that means it does nothingIt doesn’t actually block radio waves (radiation) if it has no effect on your signal.
Perhaps one Wi-Fi EMF shield will interfere with Wi-Fi less than another. That just means that the radiation screen that gives you a better Wi-Fi signal blocks less Wi-Fi radiation than the radiation screen that gives you a weaker signal, thus blocking more Wi-Fi radiation.
There is no free lunch. Wi-Fi is radio waves, that is radiation. Blocking WiFi radiation means that you are blocking your WiFi signal. If you could block 100% of the WiFi radiation, you would make your WiFi router 100% useless.
If you don’t want WiFi, try wired internet
Even if Wi-Fi radiation were a concern – and we’re not saying that – a Wi-Fi EMF shield or “router protector” wouldn’t make sense as a product.
There are various possibilities. Either you have an ineffective shield that gives you good Wi-Fi because it doesn’t actually block anything, an effective EMF shield that’s so good it stops you from using Wi-Fi, or a shield that somewhere in the middle you have a weak Wi-Fi signal , but still some of that ‘WiFi radiation’ (in other words, the WiFi signal) escapes from the cage.
If you’re concerned about this, you can ditch the Wi-Fi router and get a wired router that will connect your computers and other devices with Ethernet cables. You can then avoid using Wi-Fi and prevent your router from emitting any “Wi-Fi radiation” (in other words, Wi-Fi signal).
But you don’t have to do this as Wi-Fi isn’t dangerous.
Or try the National Radio Quiet Zone
Even if you didn’t use your own Wi-Fi router, you would still be exposed to other forms of radio waves (radiation). This includes, for example, Wi-Fi signals from your neighbors, cell phone signals, Bluetooth device communication, FM radio, AM radio, walkie-talkies, cordless phones, wireless baby monitors, and so on.
In the US, a good way to avoid many of these is to move to the US National Radio Quiet Zone, a place in the country where most types of EMF radiation (including Wi-Fi and cell phone signals) are restricted to avoid interference. sensitive equipment used for scientific research and military intelligence gathering in the area.
You don’t have to move there, of course, as there is no evidence that this type of radiation is dangerous.
But if you believed that radio waves were a problem, a router shield wouldn’t be a good solution as you would only address a small portion of the problem. (But again, it’s not a problem!)
One last thing: 5G is also just radio waves, and there is no evidence that it is dangerous either.
RELATED: How concerned do you need to be about the health risks of 5G?