What's the best physical car security device around?

My daughter has just bought a new BMW 2 Series Convertible which has to be parked on our drive. What device would you recommend she could attach to the steering wheel for extra security?
We've reviewed both the Stoplock Pro and the Disklok. Reviews are here; Disklok (kit.honestjohn.co.uk/reviews/review-disklok-steeri.../) and Stoplock Pro (kit.honestjohn.co.uk/reviews/stoplock-pro-review/).

However, there are better methods of security than just physical deterrents. Relay theft on keyless entry cars is one of the most common ways newer cars are stolen, and BMWs are one of the most at-risk because of their high value. The number one way to prevent keyless entry theft is to stop the key being vulnerable by blocking the signal. Thieves use relay devices (which you can easily buy online) to amplify the signal from the keyfob in your home to a transmitter near your car, which essentially tricks your car into thinking the key is present. This allows the thieves to enter the car and drive away. Faraday bags are a good preventative measure, they work by blocking electromagnetic fields. This stops radio frequencies from being amplified, all you have to do is put your key in the little bag (www.amazon.co.uk/MONOJOY-Blocking-Antitheft-Protec...g)

However, there are also videos on YouTube that explain how to make your own Faraday Bag using materials around your house if you don't want to spend anything.
Answered by Georgia Petrie on

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