 Because of the cultural sensitivity, female Afghan returnees are checked by UNHCR women employees to ensure their faces are not seen by male staff.A sensitisation campaign was carried out among Afghan refugees living in camps and urban areas of Pakistan by UNHCR before the introduction of the iris verification system.The UN Refugee Agency lowered the age limit for iris verification from 12 years to six years to prevent adults abusing children by hiring them out for repeated trips to Afghanistan.