BMW cars will notify you of scratches on the body themselves.

BMW has filed a patent application for a scratch detection system that will notify the car owner of any damage to the bodywork. The technology is based on the piezoelectric effect: the control unit captures the electric charge that occurs when the film is deformed and transmits the information to the on-board system of the machine or to the cloud platform. Whether the technology will become serial is still unclear. If a scratch appears while the car is moving, it will report this with audible and visual signals. If this happens while the owner is out of the car, an alert can be sent to the smartphone.