Author identifiers are unique identifiers assigned to authors and researchers to solve the author ambiguity issue within the scholarly community due to researchers sharing the same names. The benefits of such a system are:
There are several author identifiers, the most used and integrated system is ORCID.
You can add publications to your ORCID and link author identifiers
Add your Google Scholar public profile URL link under Websites and social links in your ORCID.
A Google Scholar profile enables you to keep track of citations to your articles and provides an online presence for your scholarly work.
For more information visit ORCID iD and research identifiers
A Web of Science Researcher Profile (using ResearcherID) is a valuable addition to your ORCID profile if you have publications indexed in Web of Science.
Manage your Web of Science Researcher Profile to add your publications, track your citations, and track, verify and showcase your peer review and editorial contributions for academic journals (formerly Publons).
More about Web of Science Researcher profiles.
We encourage you to first use the automatic linking available through the "Search and Link" option. This will greatly reduce/eliminate the risk of errors that do occur with manual entry.
ORCID support have created instructions on how to add works manually.