Sheikh Mohammadie Begum's husband (rights) instructs her on keeping her eyes wide open as she sits for an iris scan as part of the enrollment that is on its way in Naagaaram village, outskirts of Hyderabad in Andhra Pradesh, India. India is assigning each one of its 1.2 billion people a unique ID number based on digital finger prints and iris scan. Photograph: Sanjit Das/Panos