What is Image Verification ( Captcha )?

A security test to determine whether or not the user is human. This will ensure that only human visitors will actually submit the form, and not spamming bots (software "robots") that are browsing the web from site to site and submitting spam where they can. Spammers can create programs that visit a large number sites on the Internet, collect emails listed on websites, submit contact forms, or even try to break passwords by trying to login over and over again with computer generated passwords.

Fortunately, it is impossible for a non-human (i.e., computer program) to extract a word or a combination of letters and numbers from an image if the letters and numbers are not all of the same size and of similar font. This is why this Image Verification security method ensures that only real people can submit our form.