Why put car keys in aluminum foil?

Does It Really Work?

Yes, to some extent. Aluminum foil can block or weaken the key fob’s signal, but the effectiveness depends on how well the foil is wrapped and the thickness. Some commercial products like Faraday pouches or boxes are designed specifically for this purpose and provide better, more reliable protection.

Tips for Keeping Your Keys Safe

• Use Faraday pouches or cases designed to block RFID signals.
• Keep keys away from doors and windows to reduce signal leakage.
• Disable key fob signals if your car supports it when not in use.
• Store your keys in metal containers or wrapped securely in foil if no better option is available.

Final Thought

Putting car keys in aluminum foil is a quick and budget-friendly way to block wireless signals and protect against certain types of car theft. While it’s not a foolproof solution, it’s a smart little hack that can add peace of mind — especially if you’re worried about relay attacks.

So next time you toss your keys into your bag or nightstand, consider wrapping them in foil or investing in a dedicated RFID-blocking case. Your car’s security might just thank you!

Would you like me to add a section on the best Faraday cases available or more detailed anti-theft tips?