Used to have aluminum foil flags on the rabbit ears TV antenna. Worked a dream, some days could get Cheyenne and Denver!

@drmuso I believe you. :)

I only meant that with mesh networks the overall need for aluminum foil tweaks goes down.

I think the article is correct for the physics. I just think most consumers would opt for moving the router or using a mesh network to extend it first.

There is of course the benefit that shaping your wifi footprint away from neighbors and the street can make it harder for crackers to drive by and hack into your network.

@erik_squires 

You said to have fun…I tried. 

The Firewalla Purple does an excellent job at keeping your network private. 
 

Mesh networks: WiFi 6 or WiFi 6e? What are you using for the backhaul? If you put in a mesh network, know what to buy, and how to set it up. There is more to it than unboxing the nodes and turning them on. 

I’ve been putting aluminum foil on my head for decades. Saves me from the aliens getting my brain. I learned that trick during the late 70’s while in Sedona. 😆 But joking aside you’re correct. I started playing with foil while in high school in the early 70’s. Started building stereo amps in electronics class and speakers in wood shop. I used the foil to insulate sections of the cheap kits to reduce hum. Ah the good old days when there was an RCA tube tester and the bottom was full of tubes at Thrifty Drugs. Cheers , Mike B.