Despite modern locking systems on vehicles, some criminals do manage to overcome them by using devices bought legally and relatively cheaply on the internet.

All of which work by affecting the radio frequency imitated by the key fob / device, enabling vehicles to be stolen despite owners having possession of the key(s).

Keyless vehicles automatically lock / unlock depending on the proximity of a key device, which is usually no bigger than a bank card.

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The system operates via radio signals passed between vehicle and key device. These signals can be intercepted by criminals.

Keys constantly emit a signal, (at times even detectable from within a building), which can be picked up by anyone with an appropriate transmitter relay device.

The signal is relayed back to the vehicle, which unlocks and allows the start button to work and once away from the scene of the crime, a new key can be programmed via the OBD port.

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Officers have issued the following preventative measures:

Keep your key device in a Faraday pouch (see picture), which has a lining that prevents the items inside from receiving or transmitting radio frequency signals.

Check vehicle doors are locked before walking away

Do not store keys near windows or doors

If you buy a second hand keyless car, get the key reprogrammed

Make sure the key and any spares are stored securely and safely

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Consider using a steering lock

General advice:

Do not leave any valuable items in the vehicle- if left on show they will encourage thieves to break in. Please note areas such as glove boxes and under seats are not secure and not suitable for the storage of valuables.

Consider using a steering locks a visible deterrent to thieves – someone who is so obviously conscious of security is less likely to leave valuable in a vehicle.

Avoid parking in dark, secluded areas, choose locations that are well lit and over looked by houses, passers-by and covered by CCTV if possible.