How can you protect yourself against “suitcase” theft?
Police officers:
The “suitcase” method is called that because the device used by thieves often resembles a suitcase. Thieves do not limit themselves to stealing cars, for example, when the owner gets out and goes shopping—they also operate around homes. They count on the driver having left the key in a place where it can be detected from outside, such as near a door or window. In such a situation, thieves do not even have to approach the victim.
And they warn:
Above all, at home, do not leave your keys by the entrance, in the hallway, on a windowsill or even next to an exterior wall of the building. It is best to put the key in a metal box, a special case or wrap it in aluminium foil. It is a good idea to buy a special case or other container for a car’s proximity key that blocks radio signals and reduces the risk of thieves intercepting the signal emitted by the key. Such professional cases are already available on the market.