Boulder Public Library Code Image Information
All Boulder Public Library on-line forms require the input of a code image with
a distorted, embedded randomly generated 6-digit number. The purpose of the
code image is to distinguish if the form was submitted by a machine or a
person. By making this distinction, the library is able to cut down on the
amount of "spam" received and/or on-line form submission abuse.
The code image is based on a CAPTCHATM.
Click here to read more about the CAPTCHATM
project at the School of Computer Science at Carnegie Mellon University.
You may test the CAPTCHATM program
below.