Can Aluminum Foil Block GPS

Can Aluminum Foil Block GPS?

4 mins

It’s no secret that technology can be used to track our movements. GPS tracking is a common way to keep tabs on where someone is, but what if you need to block GPS signals? Can aluminum foil do the trick?

Yes, aluminum foil can block GPS signals and make it difficult for GPS tracking devices to work properly.

This is because aluminum foil reflects and deflects radio waves, including GPS signals. While it’s not impossible to track a person who is wrapped in aluminum foil, it would be much more difficult than if they weren’t covered in the metal. 

Also, aluminum foil isn’t going to completely block all GPS signals, so some tracking might still be possible depending on the strength of the signal.

What Is Aluminum Foil and How Does It Work?

An aluminum foil is a very thin sheet of aluminum that is often used in food packaging or for wrapping food. It is made by rolling aluminum into very thin sheets.


Aluminum foil is very popular because it is shiny, it can be easily folded and it is very good at conducting heat. It is also very lightweight, making it easy to transport.

Aluminum foil works by reflecting thermal radiation back towards its source. This means that if you wrap something in aluminum foil, it will not absorb heat from the environment and will stay cooler for longer.

It’s also a good conductor of electricity, which is why it is often used in electrical applications.

How Does GPS Signal Work?

Have you ever wondered how your phone knows exactly where you are? The answer lies in a technology called GPS, or Global Positioning System.

GPS is a constellation of satellites that orbit the Earth and transmit signals to receivers on the ground. By measuring the time it takes for signals to reach the receiver, the GPS system can calculate the distance to each satellite and determine the receiver’s location.

This process is known as triangulation. Many modern phones come equipped with GPS receivers, which means they can provide accurate turn-by-turn directions for driving, walking, or biking.

And because GPS signals are available anywhere on Earth, this technology can also be used for applications like tracking wildlife, monitoring earthquakes, or locating lost hikers. So next time you use your phone to find your way around town, remember that you have GPS to thank for getting you there safely.

What Can Block GPS Signals?

GPS signals are transmitted from a satellite to satellite, and eventually to the GPS receiver in your car or phone. These signals are very weak and easily obstructed. trees, buildings, and even heavy clouds can all block GPS signals.


In addition, electronic interference from sources like power lines or cell phone towers can also disrupt GPS signals. As a result, it is not uncommon for GPS reception to be unreliable in urban areas.

If you find that your GPS is having trouble acquiring a signal, try moving to a more open area. You may also need to check for any obstructions that could be preventing the satellite signals from reaching your device.

How Can  Aluminum Foils Block GPS Signals?

You would be surprised to know, that aluminum foil is one of the most popular materials for blocking GPS signals. This is because the aluminum foil is an excellent reflector of electromagnetic waves.

When GPS signals hit the surface of the foil, they are reflected back into space, preventing them from reaching the GPS receiver. The scientific principle behind this is called “electromagnetic interference.”

While aluminum foil is not the only material that can block GPS signals, it is one of the most effective and easiest to use.

  • To block GPS signals with aluminum foil, simply wrap a sheet of foil around the GPS device.
  • For best results, use multiple layers of foil, and make sure that there are no gaps in the coverage. You can also use aluminum foil to create a Faraday cage, which is an enclosure that blocks all electromagnetic waves.
  • Faraday cages are often used to protect sensitive electronics from EMPs (electromagnetic pulses).

To create a Faraday cage with aluminum foil, simply line a box or other enclosure with foil, making sure that there are no gaps in the coverage. You can also use aluminum screen mesh instead of foil, but it will be less effective.

How To Confuse GPS Tracking With Aluminum Foil?

Have you ever been tracked by someone using GPS? If you have, you know it can be quite a feeling of violation, like someone is constantly watching your every move.

While there are ways to disable GPS tracking on your phone or car, what if you want to take things one step further and really confuse the person doing the tracking?

Here’s how to do it:

  • First, find a large aluminum baking dish. Turn it upside down and place it over the area where you’ll be spending time. This could be your driveway, the parking lot at work, or even your front yard.
  • Next, take some tin foil and crumple it up into small balls. Once you have a good amount, sprinkle them around the perimeter of the dish. The more tinfoil you use, the better chance you have of confusing the GPS signal.
  • Finally, sit back and enjoy your own personal force field of foil-y goodness. The GPS tracking signal will be bouncing all over the place, making it virtually impossible to track your exact location. So go ahead and live your life worry-free – at least from GPS tracking!

Wrap Up

So, what is aluminum foil? How does the GPS signal work? What can block GPS signals? And finally, how can an aluminum foil block GPS signals? 

Hopefully, by now you have a better understanding of these questions and more importantly, the answers. While it’s unlikely that you’ll need to block your GPS signals anytime soon, it’s always good to be prepared.


Michael Fied

founder of and SpamBurner

Michael Fied is the founder and CEO of and SpamBurner. In addition, he’s an internationally top-rated and award-winning website advisor and website architect with a global team of 55. You can find Michael on LinkedIn or contact him directly here.

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