Locked your car? Keys in a safe place? Keyless technology is helpful when you have your hands full.

It works by the vehicle sending out a radio signal, which is picked up and relayed by the key fob, if it’s close enough. If the signals match, the car will lock or unlock.

Unfortunately, this convenient technology has led to the development of devices which criminals can exploit.

Derbyshire Police have created a short video (opens in a new window) that shows how thieves can use a set of relay devices to open and start your keyless car from outside your home.

Nationally, policing has been working closely with the government to look at ways legislation can be used to stop the sale of keyless repeaters and signal jammers.

However, thefts of keyless vehicles are still taking place.

Here’s several simple steps you can take to make it harder for thieves using this method:

• Use a Faraday case to store your key fob – and also any spares. These pouches block the signal and help prevent thieves using the ‘relay attack’ method.
• Make sure the pouch is designed specifically for keys and test it by inserting your fob into the pouch and attempting to open your vehicle.
• Refer to your user manual to see if your keyless entry fob can be deactivated at night.
• Check that you have a motion-sensor enabled fob, which goes to sleep when idle, such as when stored at home. Many vehicle manufacturers now produce this type of fob.
• Go old-school and fit a steering wheel clamp.
• Be sure you’re secure. Don’t let thieves get an easy ride.