1. A system for providing group interactivity, comprising: at least one processor and a memory device; means for capturing an image; means for determining size of an audience in the image; means for interacting in a small audience environment; and means for interacting in a large audience environment; wherein the small audience environment interacting means further comprising means for calibrating operation of the group interactivity using a template image; wherein the calibrating means further comprising means for computing at least one threshold value for the template image; and wherein the at least one threshold value is optimally set at a value just below a point where a significant amount of noise is detected.