Purdue University Identification

The Purdue University Identification (PUID) is a 10-digit number unique to each individual. The number is printed on your Purdue photo identification card, your primary identification within Purdue.

• consistently establish an individual’s identity for University business
• eventually replace the Social Security Number (SSN) as the primary University identifier
• have value only within the Purdue University system

The PUID helps eliminate problems caused by similar or identical names and possible miss-spellings among the tens of thousands of names of individuals affiliated with Purdue as students, faculty, staff, alumni and vendors.

• What is the PUID Data Classification?

Your Purdue photo identification card is printed with your ten-digit Purdue identification number (PUID). The University is gradually phasing in the use of the ten-digit PUID as it phases out the use of the nine-digit Social Security Number (SSN). During this extensive process, you will still be asked to provide your SSN -- or alternative student identification number (SID) - when a nine-digit number is needed for identification or to receive services.

• How do I find out what my PUID is?