The National Identification Authority (NIDA) is the principal body responsible for the registration and identification of Tanzanian citizens and residents. Established with the aim of improving national identification systems, NIDA provides a range of essential services, including the registration of both citizens and foreign residents, enabling access to various social, economic, and security services with the National Identification Number (NIN).

Citizens can register through an online platform or traditional methods, while measures have also been instituted for the registration of Tanzanian diaspora residing abroad. NIDA offers services such as updating registration details, replacing lost identification cards, and tracking application statuses. With a commitment to inclusivity, NIDA facilitates the issuance of identification to recognized foreign residents, ensuring they can navigate daily life with ease.

Through technological advancements and outreach initiatives, NIDA reinforces its mission of enhancing national identity and aligns with government policies to promote seamless access to governmental and public services.