The document discusses ORCID IDs and Researcher IDs. It defines ORCID IDs as unique identifiers for researchers that link them to their work activities. ORCID IDs help avoid author misidentification and are being increasingly required by funders and publishers. The document also defines Researcher IDs as unique identifiers that help researchers manage their publication lists and identify collaborators. Researcher ID data can now be exchanged with ORCID IDs.