ORCIDs help identify researchers when they:
ResearcherID is a unique identifier that enables authors to track publications and citation metrics in Web of Science.
If you already have publications indexed by Web of Science, you can claim an automatically generated author record and ResearcherID. Otherwise, you can create a ResearcherID by registering for a researcher profile.
After you create/claim your ResearcherID, make sure the publications listed on your researcher profile belong to you and not to authors with the same or similar names. You may also need to merge duplicate author records to ensure there is a single ResearcherID associated with your publications.