Personally-identifiable information (PII) is any piece of information which can potentially be used to uniquely identify, contact or locate a single person. PII is generally kept private and often used for financial, medical or research identification. Examples of PII include Social Security numbers, credit card numbers, bank account numbers, driver’s license numbers and account passwords.
Learn more about data classifications here: https://www.wcsu.edu/iti/security/data-classification/