Digital Author Identifier

The Digital Author Identifier (DAI) was a Dutch initiative to create an person identifier for researchers to (1) enhance linkability of scholarly communication and other types of output to a single author and (2) to disambiguate between authors with similar or even the same names. As a form of authority control, DAI was envisioned to assign a unique national id for every author active within a Dutch university, university of applied sciences, or research institute.

Source: Wikipedia — Digital Author Identifier (CC BY-SA 4.0)