CAPTCHA is a program that can tell whether its user is a human or a computer. You've probably seen them — colorful images with distorted text at the bottom ofWeb registration forms. CAPTCHAs are used by many websites to prevent abuse from "bots" or automated programs usually written to generate spam. No computer programcan read distorted text as well as humans can, so bots cannot navigate sites protectedby CAPTCHAs. nopCommerce uses reCAPTCHA.
