CPL Patron Verification FAQ frequently asked questions
CPL Patron Verification is used by authorized staff members at Illinois libraries with a reciprocal borrowing arrangement with CPL. These libraries offer library cards free of charge to Chicago Public Library cardholders.
Before issuing a local card, the library may want to verify that a CPL patron has a valid library card that isn't restricted or expired. CPL Patron Verification allows them to check if a patron is in good standing at Chicago Public Library.
Only authorized libraries may use CPL Patron Verification. Each of these libraries has a unique 6-digit access code to use when verifying a patron from Chicago Public Library.
If your library has a reciprocal borrowing arrangement with Chicago Public Library, you can apply for a Patron Verification access code by calling CPL at (312) 747-4300.
If your library has had an access code in the past and lost track of it, you can request a new Patron Verification access code by calling CPL at (312) 747-4300.
Once you've entered a valid access code, you can verify multiple patrons by entering the patron barcode and ZIP code without having to re-enter your access code for each patron. CPL Patron Verification will remember your access code until you close your browser or log out.
We ask for the ZIP code as a security measure to ensure the patron is the owner of the library card.
CPL issues library cards with barcode numbers in two formats:
- 12 digits
- The letter "D" followed by 9 digits
Chicago Public Library patrons are restricted when they have fines/fees exceeding $10 or lost materials on their account.
Yes, all patron data is protected in transit with SSL encryption.
Yes, CPL Patron Verification adapts to fit your screen size, including smartphones and tablets.