An author/scientist identifier is a unique code that uniquely identifies an author in a scientific environment. In the field of publishing scientific information, there are often difficulties in identifying their authors. The main problem addressed by author identifiers is ambiguity of author names. Ambiguities may be caused by frequently occurring names and surnames (e.g. John Smith) which make it difficult to distinguish between authors and correctly identify publications written by the relevant author. Author identifiers give you a way to reliably and unambiguously connect your name(s) with your work.
More information about three most used identifiers can be found on separate pages: