Modern keyless cars are convenient—but also more vulnerable to theft. Thieves now use relay attacks to capture your key fob’s signal and drive away with your car, often in under 60 seconds—without breaking a window or opening a door.

Your key fob is always transmitting a low-level signal. Criminals with cheap devices can amplify or clone it from outside your home. That’s why cybersecurity experts recommend a simple, surprisingly effective solution: wrap your key fob in aluminum foil.

Foil blocks the signal, acting as a mini Faraday cage. Or, upgrade to a Faraday pouch—a sleek, signal-blocking bag that costs under $20.

Seniors are especially at risk. Key habits—like parking in driveways, leaving keys near doors, or driving newer vehicles—make it easier for thieves to strike.

Protect yourself with these 5 tips:

Wrap your key fob in foil when not in use.

Use a Faraday pouch for daily protection.

Keep keys away from entryways or windows.

Add a steering wheel lock for visibility.

Park in well-lit or secured areas.

Don’t wait for technology to catch up. A roll of foil today could save your car tomorrow. Better safe than sorry.