Fuente: Wipo "Sensorization" A head-mountable display can include a structural frame defining a viewing opening, an optical module coupled to the structural frame. The optical module can include a display screen to project light through the viewing opening. The display screen can define an inner edge, an outer edge opposite the inner edge, a lower edge extending between the inner edge and the outer edge, and an upper edge opposite the lower edge. The optical module can include a first camera disposed adjacent the inner edge and closer to the lower edge than the upper edge, and a second camera disposed adjacent the lower edge and closer to the outer edge than the inner edge.