Disclosure of your social security number (SSN) is requested for personal security requirements. Your social security number will be used as a unique number in order to identify you in the TWU administrative computer system. Disclosure of your SSN is mandatory for access to the secure system. The SSN provided is not retained in a database or recorded for tracking purposes. Disclosure of your SSN to Federal or State Agencies will be governed by the Public Information Act (Chapter 552 of the Texas Government Code).