Why put car keys in aluminum foil?

So criminals no longer need to commit a burglary by forcing the lock on the door to confiscate the vehicle;. Now they just need to hack the car key to achieve this. In fact, hackers capture the signal emitted by contactless keys; to open and start the car door without the slightest difficulty. A weak point which does not reassure vehicle owners. Fortunately, there is a simple trick that will allow you to avoid such a mishap and protect your car against any attempted theft.

Attempt at remote-controlled car theft. Source: spm

With the advent of contactless keys, criminals have had to adapt by introducing and practicing new car theft techniques. To counter any attempt of this type, there is a tip which may seem confusing at first, as it seems simple and inexpensive.

Simply wrap your car keys in aluminum foil. With the advent of contactless keys, criminals have had to adapt by introducing and practicing new car theft techniques. To counter any attempt of this type, there is a tip which may seem confusing at first, as it seems simple and inexpensive. Simply wrap your car keys in aluminum foil;

More specifically, when your car key emits a radio signal, it generates an electromagnetic field that propagates in all directions. In this case, thieves try to intercept the signal sent by the key by amplifying it and using a transmitter powerful enough to transmit it to the vehicle. The aluminum foil therefore acts as a protective layer which allows it to absorb the signal emitted by your car key and thus prevent hacking and theft attempts.

Aluminium foil. Quelle: pm

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