Modern vehicles have become smarter, more convenient, and packed with technology. Features such as keyless entry and push-button start systems make everyday driving easier. Instead of searching for keys in your pocket or bag, you can simply approach your vehicle, unlock it automatically, and drive away.
However, convenience sometimes creates new security risks. One growing concern for drivers across the UK is the rise of relay attacks. Many vehicle owners have never heard of them until they become victims themselves. Understanding how relay attacks work and learning how to reduce the risk can help drivers better protect their vehicles.
What Is a Relay Attack?
A relay attack is a type of vehicle theft that targets cars with keyless entry systems.
Rather than physically stealing keys or forcing entry, criminals use electronic devices to capture and extend the signal from a vehicle’s key fob. Keyless systems work by communicating wirelessly with the car. If the vehicle detects the correct signal nearby, it unlocks and allows the engine to start. Relay attacks exploit this process.
In many cases, two thieves work together:
- One stands near the house or location where the key is kept
- Another stands beside the vehicle
- Electronic devices capture and relay the key signal
- The car believes the key is nearby
- The vehicle unlocks and can be driven away
The entire process can happen in a matter of seconds.
Why Keyless Vehicles Can Be Vulnerable
Many drivers assume their car is secure because the key remains safely inside their home.
Unfortunately, some key fobs continuously emit signals even when not being used. If criminals can extend that signal, the vehicle may respond as if the owner is standing beside it.
Vehicles with:
- Keyless entry
- Push-button start systems
- Passive unlocking technology
may face increased risk if additional security measures are not in place. Not every vehicle operates in exactly the same way, but relay attacks have become a recognised concern across many modern models.
Signs You Could Be at Risk
Most drivers never notice anything unusual before a relay theft happens.
However, certain situations may increase risk:
- Parking vehicles outside the home overnight
- Keeping keys close to front doors or windows
- Leaving spare keys in accessible locations
- Relying only on factory security systems
Urban areas and places with high vehicle theft rates can sometimes create greater opportunities for organised criminals.
How Drivers Can Help Protect Their Vehicles
While no security method guarantees complete protection, simple precautions can significantly reduce risk.
Store Keys Away From Entry Points
Many people leave keys near doors for convenience. Unfortunately, this can make signal capture easier.
Instead:
- Store keys deeper inside the home
- Avoid placing them near windows
- Keep spare keys secure
Increasing distance can sometimes reduce signal exposure.
Consider a Signal-Blocking Pouch
Signal-blocking pouches, often called Faraday pouches, are designed to block radio communication from key fobs.
When keys are stored inside:
- Signals cannot easily pass through
- Criminals cannot amplify the transmission
- Relay attempts become more difficult
Many drivers use these pouches as an additional security layer.
Disable Keyless Features if Available
Some vehicles allow owners to disable passive keyless systems. Check your vehicle handbook to see whether this option exists. Disabling keyless communication when not needed may reduce exposure to relay theft methods.
Use Visible Security Devices
Traditional security tools still remain valuable.
Examples include:
- Steering wheel locks
- Wheel clamps
- Driveway security posts
Visible deterrents can make vehicles less attractive targets. Criminals often prefer easier opportunities.
Keep Vehicle Software Updated
Modern vehicles increasingly rely on software systems.
Manufacturers sometimes release:
- Security updates
- Firmware improvements
- System enhancements
Regular servicing and updates may improve overall protection.
Consider Additional Vehicle Tracking
Some drivers choose tracking systems that help locate stolen vehicles. While tracking does not prevent theft itself, it can improve recovery chances if a vehicle is taken. This may provide extra reassurance for higher-value vehicles.
Vehicle Security Is No Longer Just About Locks
Years ago, car theft usually involved forced entry or damaged locks. Today, technology has changed both vehicles and criminal methods. Modern security increasingly involves digital awareness as well as physical protection.Understanding newer theft techniques helps drivers make informed decisions rather than relying solely on factory settings.
Final Thoughts
Relay attacks show how vehicle theft methods continue to evolve alongside technology. While keyless entry systems offer convenience, drivers should understand the potential risks associated with them. Simple precautions such as storing keys carefully, using signal-blocking protection, and adding visible security measures can reduce opportunities for criminals. Being proactive today can help prevent a stressful and expensive situation in the future.
