Yes, this is a real thing. It's a disturbing truth that kids/hackers have figured out how to turn their WiFi routers into a weapon that can go through solid walls to do you damage. Don't piss off that teenager.
But this isn't surprising if you already knew that your WiFi router uses the same rays produced by your microwave (minus about 50 MHz). Just google "UHF microwave gun" to get an idea of how they work. The WiFi guns are more focused and they like to burn women's privates and breasts. It's disgusting. These punks deserve jail time and to have their faces on TV. Not only that, but they can turn their WiFi router into a camera that can not only see you through your walls but also tell your movement, shape, and size. Google "FreeSense: Indoor Human Identification with WiFi Signals."
This guide is to help you get some privacy and protection back in your life.
The items that can blocks WiFi and microwaves are: stone, metal, and water.
How to block WiFi
Stone
The denser the better. That's why rocks > concrete > cinder blocks & bricks.
Heavy black basal rocks are great because they heavy and have a high iron content. Black tourmaline is also a good choice. The new age community uses it to protect themselves from EMF. It seems to also have a lot of iron and aluminium in it. I don't know how it compares to basalt, but there is a YouTube video called "Does Black Tourmaline Protect Against EMF's? | EMF Protector" you might want to check out.
If you can find them for bulk and cheap, you can fill a gabion fence for some major protection while you sleep.
If you can slice it thin, like how you slice a potato, can make scaled armor or maximize the material on a wall without creating any holes. Or you could pulverize the material and add it to the concrete. Then you'll have a black concrete wall that blocks EMF. It's your own Space Odyssey 2001 monolith.
Metal
Basically, if it can conduct electricity well it is good enough to block microwaves. Copper and silver is the most conductive and, thus, the best when it comes to blocking. Iron is middle of the road. Aluminium tends to be the cheapest but still a very effective metal at blocking microwaves.
EMF paint works because of the iron balls in it causes the radiation to reflect in an unusual pattern. It's more or less the same technology they use on stealth planes to block radar.
When building a Faraday cage, make sure you have insulating material in it. When I first got targeted, I wrapped my smartphone in aluminium. Little did I know the foil was actually making direct contact with the antenna which was boosting its signal. I had the hardest time figuring out how people (police and military veterans) were tracking me with my cell phone off (it wasn't really off, it just appeared that way as the battery was drained when I turned it back on) and wrapped in aluminium foil. You need about six layers of aluminium foil because it is to thin for it to work. Or you can use less layers if you put insulating materiel between the layer essentially making a Faraday cage or more within each other.
Aluminium mesh screens work great even with the holes for low frequency wavelengths. See "Shielding RF Radiation with Aluminum Screening" by thisirradiatedlife. They don't work so well for high-frequency as they tend to be small enough (when measuring the distance between the wave's valleys and hills) to go through the holes. Higher frequency radiation, however, has a harder time penetrating through solid objects. The high frequency means a shorter wavelength (i.e. the waves moves up and down a lot more), making it more likely to smash into atoms. This is why x-rays (a very high frequency radiation wave) can penetrate things so well, as it has very small waves, but can cause a lot of much damage to molecules as the higher frequency causes it to run into atoms, especially if the object is dense like bones.
Water
These WiFi signals effect water molecules. Since we're mostly water, that's why it can easily pass through other materials with a lower moisture content. So we could use water to block it, the same way we could use a another human as a human shield for bullets.
The wet clay in concrete blocks is a great idea. The wetter the better. There is a paper called "Electromagnetic Attenuation Properties of Clay and Gravel Soils" that got about 90% saturation of clay (that's about a 23% moisture content) through a special process and it still had the workability of the 50% saturation mixture (I believe the 50% is more or less the wet clay you come across after a heavy rain). Their 4.5 GHz signal was blocked with anything thicker than a 1 cm layer of the 90% saturated clay. I'm just worried the water would work its way out of the clay and concrete eventually.
Another idea is to use acrylic to build a water fence. The "glues" used to build aquariums actually fuse the acrylic panels together. Using wood or additional acrylic panels for support, one could easily build a water fence 6-8 feet tall and a few inches thick. Google "Fence That Combines A Fence And An Aquarium" to see what I'm talking about.
Has anyone ever thought about buying a cheap air mattress or inflatable pool raft and filling it with enough water where you are comfortable sleep under it? If you're in a second story or above, maybe have one below you as well. It just seems like an extremely cheap and easy way to have a water barrier around you while you sleep. When I slept with wet towels covering on my body, they were very effective at blocking the microwave heat (it's just hard to sleep with wet towels).
One more idea is to put copper pipes together in a very tight s-pattern so that you have a panel of pipes and fill it with water. This way you get two blocking materials, but I know this will probably be very expensive. However, I thought about making this into a shield you can keep on you. Combine it with some basalt or black tourmaline scales on the front and insulating material on the back, then you would have the ultimate shield that has all three materials. I feel like I'm playing an RPG here.
Summary
These are just some ideas. I know some would be way too expensive to do, but maybe someone else can think of some ways to make them practical and affordable.
The only thing you really have to be mindful of is that stone or earth materials need to be dense for them to do any good. Other than that, try to combine from the three categories above and the thicker the better.
The cheapest solution: Spend about $20 on stainless steel wire/rope of 300+ feet and wrap it around your house. Use a little bit of the wire to ground it. This will act as a big antenna for the microwave. Buy some cheap pool floats/mat at Walmart. They should be $5-7 each. Fill them with water and build a fort with them. You can cover the floats with aluminum foil if you want. Finally, move your sleeping area somewhere in your house to somewhere you are behind earth, stone, brick, tile, or concrete like your bathroom, kitchen, or basement. So for about $40 bucks, you can get some great protection.
The mid-tier solution: An a-frame house (the roof is basically also the walls) in a rural area (away from neighbors that could use WiFi on you) made of a thick copper or aluminium roof. Paint your non-roof walls with EMF paint. "Insulated" with local rocks in the edges of the wall/roof and actually insulated with foamcrete. Foamcrete obviously isn't that dense, but it'll do better than the insulation and wood you would normally use. Inner walls lined with tile (use only on vertical walls, not on the ceiling, you don't want them to fall in you). Cheap, light tile isn't the best, but it is better than drywall. Have your water tank and an aquarium or two inside. If it's a two story house, have a water bed on top as a big shield when you're on the bottom floor.
The best solution: First a basalt or black tourmaline gabion fence, then an aquarium fence, then thick walls of concrete (at least 8+ inches) for your house (you want a dome house so your roof will also be concrete), paint it with EMF blocking paint (you can paint over it with any color you want), and finally a mesh wire Faraday cage to sleep in. See "Sleep Inside A Faraday Cage" by PrognatusSeptem on YouTube for a good example. Here is a guide to build one with $40 worth of metal mesh: imgur . com / a / quHIU Make sure to test it with your phone or a cheap FM/AM radio. The mesh wired Faraday cage/Faraday cage with holes (look at the glass door in your microwave to see what I'm talking about) are good at blocking low frequency electromagnetic radiation (radio waves and some microwaves) and those are the only types that could possibly get past everything else. It would also be good to build this into a hill/mountain with a high clay/moisture content.
I didn't cover clothing, but I hear wearing a black tourmaline pendant and wearing SHIELD clothing (shieldapparels . com) are some good options.
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