ID & Password Uniqueness—11​.300 (a)

"Persons who use electronic signatures based upon use of identification codes in combination with passwords shall employ controls to ensure their security and integrity. Such controls shall include: (a) Maintaining the uniqueness of each combined identification code and password, such that no two individuals have the same combination of identification code and password."

This requirement is addressed by the content in Signature Uniqueness—11.100 (a).