resources (financial or social) these games of paperchase make the recognition of legal identity and nationality ever more fragile. These challenges of conflicts of law are greatest for refugees and irregular migrants, but have proved difficult to resolve even within the European Union, with the presumption of legal residence that follows from citizenship of another member state. The Hague Conference on Private International Law has a project to consider transnational recognition of parentage (filiation), especially in the context of surrogacy arrangements, but has hardly engaged with the broader issues. The paper urges greater urgency in seeking harmonisation of civil registration practices, not only by The Hague Conference, but also by the UN as it develops its newly adopted ‘Legal Identity Agenda’, and by the UN human rights machinery. Finally, the paper highlights the danger that the SDG target will rather encourage short cuts that seek to bypass the often politically sensitive task of determining the nationality of those whose legal status is currently in doubt: new biometric technologies provide a powerful draw to the language of technological fix, as well as the strengthening of surveillance and control rather than empowerment and rights. These risks – and their mitigation – are further explored in a twinned article in World Development.