1. A method comprising: analyzing a depth data to locate a person in the depth data; determining a distance of the person from a capture device used to generate the depth data or a display device communicatively coupled to the capture device, and a size of the person within the depth data; determining, based on the distance and the size of the person, at least one of a size, shape or location of a physical area in which the person's movements are evaluated; determining motions of the person within the determined physical area in which the person's movements are evaluated; analyzing a second depth data to locate the person in the second depth data; determining a second distance of the person from the capture device used to generate the depth data or the display device communicatively coupled to the capture device, and a second size of the person within the depth data, the person having changed physical locations between the second depth data and the depth data; determining, based on the second distance and the second size of the person, at least one of a size, shape or location of a second physical area in which the person's movements are evaluated, the second physical area differing from the first physical area; and determining second motions of the person within the second physical area in which the person's movements are evaluated.