Keyless entry and push-to-start ignitions offer convenience, but they also present a vulnerability to tech-savvy thieves using Car Theft Key Scanners. This article explores how these devices work, the risks they pose, and effective prevention measures.
How Car Theft Key Scanners Work: Relay Attack Explained
Keyless car theft, often called relay theft or relay attack, exploits the proximity-based unlocking systems in modern vehicles. Thieves use a pair of devices, a transmitter and a receiver, to capture and relay the signal from your key fob. The transmitter, held near your home, captures the key fob’s unique signal. This signal is then amplified and relayed by the second device, positioned near your car, tricking the vehicle into believing the key is present. This allows the thief to unlock and start the car without needing physical access to the key. The entire process can take as little as 20-30 seconds.
Protecting Your Car from Key Scanner Theft
Several methods can significantly reduce your risk of becoming a victim of relay theft:
1. Signal Blocking Pouches (Faraday Bags)
A Faraday bag, or signal blocking pouch, is lined with metallic material that prevents radio waves from entering or exiting. Placing your key fob inside a Faraday bag effectively blocks the signal, preventing thieves from capturing it.
These pouches are relatively inexpensive, starting from around £5, and can also be used to block signals from mobile phones.
2. Deactivate Keyless Entry
Some key fobs allow you to turn off the wireless signal manually. Consult your car’s manual or contact the manufacturer to determine if this feature is available on your vehicle.
3. Steering Wheel Locks and Car Alarms
Traditional security measures like steering wheel locks and car alarms remain effective deterrents against keyless car theft. Thieves often rely on electronic devices rather than traditional tools, making mechanical locks a significant obstacle. Alarms can also potentially reduce your car insurance premiums. When choosing a security device, look for third-party certifications like Sold Secure, ensuring it has been tested against common criminal tools.
4. Secure Parking
Parking your car in a garage significantly reduces the risk of relay theft by increasing the distance between your key fob and potential thieves. If a garage isn’t available, park in well-lit areas and as close to your property as possible. Consider enhancing home security with motion detector lighting and CCTV cameras.
5. VIN Etching
Etching your Vehicle Identification Number (VIN) onto your car’s windows, headlights, and mirrors makes it more difficult for thieves to resell a stolen vehicle, potentially deterring theft.
6. Keep Your Vehicle Tidy
Remove valuables and electronic devices from plain sight. Keeping your car tidy minimizes visual cues that might attract thieves.
7. Reprogram Keys for Used Cars
When purchasing a used car, reprogram the keys to ensure any previous owners’ keys are deactivated.
8. Report Lost or Stolen Keys Immediately
If you lose your keys, report it to the police and your insurance company. Have your remaining keys reprogrammed to prevent unauthorized access to your vehicle.
Vulnerable Car Models
While any car with keyless entry is potentially vulnerable, some models are more frequently targeted. Research by organizations like the General German Automobile Club (ADAC) and Thatcham Research have identified specific makes and models with varying degrees of vulnerability to relay attacks.
Conclusion
Keyless car theft using scanners is a growing concern, but by understanding how these attacks work and implementing preventative measures, you can significantly reduce your risk. Utilizing a combination of techniques, such as Faraday bags, security devices, and secure parking practices, provides the best defense against car theft key scanners. Staying informed about vulnerable car models and manufacturer updates can also help protect your vehicle.
