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.

The number is designed to:

  • consistently establish an individual's identity for University business
  • 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?

PUID and NAME may be sent together via email between Purdue business units. Note that PUID is still classified as sensitive University data, and should be handled accordingly.

The data owner for the PUID is the Director of the Identity and Access Management Office. As this office has classified PUID as sensitive University data, the PUID should be handled according to Purdue’s data handling guidelines for sensitive data. “Handling" information relates to when data is viewed, updated, or deleted. It also relates to the transfer of data from one location to another. It refers to both the electronic use and storage, and physical (i.e., paper-based) use and storage of the data.

Sensitive data handling requirements include the following:

  • Documents containing PUID should be stored out of sight when not in use.

  • Documents containing PUID should be disposed of in a manner such that they are physically destroyed beyond the ability to recover.

  • The electronic storage of PUID on fixed media without access controls, but accessible via the web is not advised. If the data must be stored via this media, it must be encrypted.

  • PUID may be transmitted via email between Purdue business units.

  • When transmitting PUID by fax, the receiving fax machine must have limited access such that only authorized persons can view the received fax. Otherwise, sender must first ensure that an authorized person will be present when the material is received via fax.

  • When transmitting the PUID via wireless or cellular technology, the sender should be aware that wireless and/or cellular technologies are not very secure. Encryption suggested where applicable.

  • When transmitting PUID by other electronic communications mechanisms (i.e., email, FTP, connections to administrative applications, etc.), encryption is suggested.

From Purdue Data Handling Requirements located at:  http://www.purdue.edu/securepurdue/procedures/dataHandling.php 

Using the PUID

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?

The PUID is printed on the face of your Purdue University ID card.

For new students, the PUID will be included in your admittance packets (along with information about setting up their career account online). The PUID will also be printed on the admissions response form (forms that students return to Purdue upon accepting admission).

New faculty and staff members will receive a letter containing their PUID shortly after they begin employment with Purdue University. Employees may also contact their business office if they require further assistance.