In many OSCE participating States, citizens are required to register their place of residence with the relevant authorities, who use the information for the planning and delivery of state services and to contact people. There are also other forms of population registration that indirectly but decisively determine to what extent persons enjoy certain basic rights, including mechanisms for the registration of such life events as birth, death and marriage. This information can determine a person’s eligibility to vote, to access education and health care, and to receive social services or a pension.