What is Image Verification ( CAPTCHA )?
Completely Automated Public Turing test to tell Computers and Humans Apart
We use this image verification security test to ensure that only human visitors will actually submit the form, and not spamming bots. Spam bots browse the web autonomously from site to site submitting spam and harvesting email addresses.
Fortunately, at this time it is not possible for a non-human ( ex. 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, the Image Verification security method ensures that only people actually can submit a form.
If you are able to successfully submit this form... Congratulation! You are human.