South Africa’s expanding digital public infrastructure intersects with complex migration flows in ways that fundamentally shape access to rights, services and protection for refugees, asylum seekers and migrants from across the African continent. This research investigates how digital identity systems interact with broader institutional data flows, which actors control access at different stages of migration and how communities navigate, contest or build alternatives when formal systems exclude them. By tracing data movements between government agencies, humanitarian organisations, private sector actors and civil society, we illuminate both the exclusions produced by datafied migration management and the possibilities for more participatory, rights-respecting digital governance.