Comparative Study of Different Types of CAPTCHA

A CAPTCHA may be a challenging turning test designed to get the safety for network applications and estimate the result supported the human prediction instead of the involvement of computer Complete Automated Public Turning Test to inform Computers and Human Apart (Captcha) is essentially a software to check where the entry is given by human o Verification issues are used for cybersecurity. the safety provided make sure that data can't be misused. Research in captchas implies advancement in AI making computers understand how human worries computer machine. it's a mechanism widely used nowadays for shielding web applications, interfaces, and services from malicious users and automatic spammers. every kind of Captcha are discussed during this paper and their advantages over each is given during a detailed approach. Captcha helps in blocking automated creations of email-accounts. Blocks Computers to vote automatically in online-polls.