The process of voter identification is of paramount importance for the overall integrity of the electoral process. Before voting, voters are required to prove their identity, usually through identity or specific voters’ documents. It is important that the electoral legislation and instructions by the electoral management bodies clearly specify what kind of identity document is valid for the purpose of voter identification. Special care should be taken with regard to groups that may lack the necessary identity documents, such as, for example, IDPs or specific minority groups. Especially in those countries where “multiple voting” is a well-known problem, not effectively verifying voters’ identities is considered to be a severe problem. A number of states in Latin America and Africa, thus, use biometric data (e.g. fingerprints, facial recognition, etc.) to ensure the unique identification of voters and prevent multiple voting. In contrast, CoE member states are quite reluctant to do so, in view of the risks for data protection, secrecy of the vote and “digital twins”.