Ticket inflation due to scalpers buying in bulk So, CAPTCHAs are also used to defend against the following types of online threats: To verify accuracy in polls and surveys (to ensure only human votes are counted)ĬAPTCHA also works to prevent spammers and hackers from inserting malware into online forms. When collecting email registrations (to ensure authentic email lists) Here are some examples of when CAPTCHA codes are used: Websites that employ CAPTCHA technology aim to prevent bots from disrupting their sites and using features inappropriately. What is the purpose of CAPTCHA?ĬAPTCHAs are used to verify that a user trying to access a website is a human and not a bot.
CAPTCHAs have evolved for accessibility and to keep up with the increasing sophistication of bot technology. There are different types of CAPTCHA tests: distorted text in an image, a series of images, or even text dictated in an audio file.
