When two or more people share the same car, the system would memorize the individual settings so each driver wouldn't have to manually re-adjust the controls every time. A person could store his or her personal preferences onto a portable device, and when that device enters the car, it will send the appropriate configuration information.
Apple initially filed for a patent in 2012, and Thomas Ethan Lowry is credited as the inventor. Future applications could include house or hotel climate controls, television, lighting, and other home automation settings.
Source : appleinsider.com