Visual Verification

The Visual Verification is a program that can tell whether its user is a human or a computer. You've probably seen them - colourful images with distorted text at the bottom of Web registration forms. These are used by many websites to prevent abuse from "bots," or automated programs usually written to generate spam. No computer program can read distorted text as well as humans can, so bots cannot navigate sites protected by CAPTCHAs.

The Visual Verification consists of words or numbers that are distorted. You need to type the text in the box below it. If you are unable to make out what the text says, you can click on the reload (Reload) button, which will give you new text.

If you have a visual impairment that means you are unable to read the text, you can click on the audio (Audio) button and a set of numbers or words will be spoken through your speakers.

If unable to use the audio alternative to the visual verification, then please contact the CSD Service Desk for assistance - Email:, Telephone: +44 (0) 151 794 4567.