Microwave Car Keys: Why Many Drivers Do It and What’s Behind This Trick

Although the microwave trick has gained attention, there are more practical and reliable ways to protect keyless entry systems.

• Use an RFID/Faraday pouch designed to block radio signals.
• Store your keys away from doors, windows, and exterior walls.
• If your vehicle allows it, disable the keyless entry function when it is not needed.
• Keep your vehicle’s software up to date if the manufacturer provides security updates.

Is your car at risk?

Not all vehicles are equally vulnerable. Cars equipped with keyless entry and keyless start are generally the most susceptible to relay attacks, while vehicles with traditional keys or older remote systems may face different levels of risk.

To determine your vehicle’s level of protection, consult the owner’s manual or contact the manufacturer to learn about the security features available for your model.

Conclusion

The microwave key trick is based on a real security concern: relay theft. While storing your key in a switched-off microwave may reduce the risk of signal interception, it is not the most practical or reliable solution.

A purpose-built Faraday pouch or other approved signal-blocking storage method is generally the better choice, combined with sensible habits such as keeping your keys away from entry points and using any security features provided by your vehicle.