A napkin placed on a car door handle could be a sign that your vehicle has been targeted for theft, so you should notify the authorities immediately.

Gangs that steal vehicles constantly find new ways to break into them, and before committing the theft, their members conduct a thorough investigation and carefully organize their course of action.

To increase their chances of success, they often "mark" the car they have targeted - a practice similar to that used in residential burglaries.

According to Spanish media, one of the most commonly used ways to mark a car is with a napkin, which is placed on one of the door handles of the targeted vehicle.
Thus, they communicate to the other members of the group that the selected car has been "fixed" and that they should begin collecting information about the owner's routine, the places where they park it, and so on.

If the napkin remains on the handle for a long time, it also means that the car is most likely not used often by the owner, which makes it an easier target.

As is evident, drivers should not consider the presence of a napkin in the glove compartment of a car as a coincidence, but should immediately become suspicious, as it is very likely that their vehicle has attracted the attention of a gang.

In such a situation, it is recommended to immediately contact the police authorities to curb the activity of the criminal group.