Why put car keys in aluminum foil?

How to Use Aluminum Foil to Protect Your Car Keys

1. Wrap the Key Fob Properly:
   To get the most effective signal block, make sure to wrap your key fob completely in aluminum foil. Be sure that the foil covers the key from all sides, leaving no gaps. The more thorough the wrap, the better the protection.
2. Double-Layer the Foil:
   For added security, you can use a double layer of aluminum foil. The extra layer will further prevent any signals from slipping through.
3. Store in a Secure Location:
   After wrapping your key fob in aluminum foil, store it in a drawer, a safe, or another secure place. The foil will block the signal even if the key fob is within range of a relay amplifier.
4. Check the Wrapping Regularly:
   Over time, the foil may become damaged or crinkled, which could reduce its effectiveness. Make sure to replace or rewrap the foil as needed.

Other Ways to Protect Your Vehicle from Keyless Car Theft

While wrapping your car keys in aluminum foil is a quick and simple solution, there are other methods you can consider to enhance your car’s security:

1. Key Fob Signal Blockers:
   There are specially designed pouches and boxes made of Faraday fabric or materials that block signals, which you can place your key fob in. These are commercially available and provide a more reliable way to shield your keys from external signals.
2. Keyless Entry Off Feature:
   Many modern cars allow you to turn off the keyless entry system entirely. If you’re not planning on using it, you can deactivate the feature from the car’s settings. This prevents the key fob from emitting signals when not in use.
3. Store Your Key Fob in a Metal Box:
   A metal box or tin can, similar to a Faraday cage, can also block signals effectively. Simply place your key fob inside the box when it’s not in use.
4. Use a Steering Wheel Lock:
   While not related to key fob security, using a visible steering wheel lock can deter thieves from attempting to steal your car in the first place.

Final Thoughts: A Simple Trick to Enhance Your Car’s Security

While modern technology has made our lives easier, it has also introduced new risks, especially when it comes to keyless car theft. Using aluminum foil to wrap your car key fob is a simple, effective, and inexpensive way to protect your vehicle from relay attacks. By blocking the signals emitted by your key fob, you can make it more difficult for thieves to gain unauthorized access to your car.

Whether you opt for this DIY solution or invest in a specialized signal-blocking pouch, taking proactive steps to safeguard your vehicle is always a smart idea. Stay one step ahead of potential criminals and protect your car with these easy measures.