once in a while there arises a new study, or new research, which reveals how dangerous are the systems of opening and closing of doors wireless modern cars. And they certainly are, with some nuances. In any case it does not appear that arising out solutions to prevent it, beyond that of the one who proposed to save the remote control of our car on the fridge. In this case, is the ADAC, the club car’s German, he came to the conclusion that 24 cars analyzed in their study were accusing him a vulnerability that would allow anyone – again with shades – open the doors of our cars without having the keys in your hands.
The problem would not have been detected in all wireless controllers, but only in those that allow us to open the car without removing the fob from your pocket.
what is the vulnerability?
The problem affect cars equipped with opening systems wireless “without keys”, that is, as it is commonly referred to as commercially. These systems are not only based on a remote control when pressing a button opens the doors of our car, but in a wireless system without removing the keys from the pocket allows us to open the door by actuating the door handle.
What cars are affected according to the ADAC?
The list is important and includes the Audi A3, A4, A6, BMW 730d, Citroën DS4 Crossback, Ford Galaxy, Ford Ecosport, Honda HR-V, Hyundai Santa Fe, Kia Optima, Lexus RX 450h, Range Rover Evoque, Renault Trafic, Mazda CX-5, MINI Clubman, Mitsubishi Outlander, Nissan Qashqai+2, Nissan Leaf, Opel Ampera, SsangYong Tivoli, Subaru Levorg, Toyota RAV4, and Volkswagen Golf 7 GTD and Touran.
How can open the doors of these cars?
To steal a car using this technique it would be necessary to install two signal amplifiers, one next to the car, and another very close to the key (remote control).
The system of opening “without keys” is based on a wireless system installed in the car and on the remote control of our car. As we get closer to the vehicle, and actuate the button of the door, the car sends a signal, which bounces off the control, confirming their presence, and proceeds to open the doors. If we move away from the car and someone tries to open the doors should not be opened. But in this study the researchers have realized that using signal amplifiers, one installed next to the car, and another installed very close to the key, it could open the doors of the car without problems (and without intercept or duplicate codes), even in the case that this is parked hundreds of miles away.
The vulnerability today, which we knew from our colleagues in Motorpasión, there is. The big problem is precisely that one of the amplifiers of the signal has to be placed very close to the key, you are practically a few centimeters or a meter.
that Is to say, not it seems that with the fact of having the keys in our house can be a risk to our car, but yes you can existirlo if we are in a public place crowded and have the keys in your pocket, for example the terrace of a bar. Or even if, as they say from the ADAC, we are sitting having a beer next to the fence of our garden.
last year we already spoke about one of the solutions that commented from The New York Times and aimed to save the keys in the fridge. First, we do not believe that the danger of having a wireless controller is so high, when it requires a very short distance to install the signal amplifier and open the doors to success. The idea, in any case, yes it made sense, and was based on the fact that a refrigerator, which is a closed metal container, to act by inhibiting the signal, such as a Faraday cage.
researchers also have found a solution, some more elegant, create a chip that you scan the delay between the sending and the reception of the signal from the remote control and the car, thanks to this, it would be possible to trace with a certain margin of error, the distance between the remote and the car. And it would be enough to draw that distance to know if the keys are next to the car or, as in the situation that says the ADAC, to hundreds of meters.