1. A processor-implemented method for controlling access to an electronic media device, comprising the processor-implemented steps of: tracking a body of a user in a field of view of a camera, the tracking comprises determining a model of the body; determining, based on the model, an absolute size, and a ratio of sizes, for a part of the body, the part of the body is at least one of an arm or a leg, the absolute size is a length of the at least one of the arm or the leg, and the ratio is a ratio of the length of the at least one of the arm or the leg to a height of the user; determining an estimated age group of the user based on the absolute size, and the ratio of sizes, for the part of the body; and based on the estimated age group, updating a profile of the user at the electronic media device with a parental control setting.