Patent 10134048 was granted and assigned to Google on November, 2018 by the United States Patent and Trademark Office.
In accordance with some implementations, a method for measuring viewership of media content is disclosed. The method is performed on a client system. The client system captures visual data of one or more users of the client system with the camera. The client system then analyzes the captured visual data to determine a facial image for each respective user of the one or more users. Based on the facial image, the client system then determines if a respective user is a participant in a media viewership study. In accordance with a determination that the user is a participant in the media viewership measurement study, the client system determines the media content being presented. The client system creates viewership data based on the user and the media content being displayed in the proximity of the user and transmits viewership data to a server system.