I have read some web site that captcha is not needed in mobile application i have some doubts why captcha is needed in a web application and not needed in a mobile that access the same appli.
Science and applications, lovely professional university, phagwara, india abstract captcha is a challenge response system which is used to distinguish between human and automated programs it is known for its efficiency in ensuring proper use of websites and online application by validating that the user is human and not a bot. Captcha objects in aspnet mvc applications are represented by the mvccaptcha class, and they can be rendered using a htmlhelper extension method defined in the same assembly to use them, your view should first import the botdetectwebmvc namespace.
Captcha is a powerful tool qingkun ramteen talib a captcha or captcha is a type of challenge-response test used in to computing o ensure that the response is not generated by a computer captchaâ requires that the user type letters or digits from a distorted image that appears on the screen.
Applications of captchas captchas have several applications for practical security, including (but not limited to): preventing comment spam in blogs protecting website registration protecting email addresses from scrapers online polls preventing dictionary attacks search engine bots worms and spam.
Captcha stands for completely automated public test to tell computers and humans apart using captcha helps to protect yourself and the email recipient from malicious bots and spammers captchas have several applications for security including protecting email addresses from scrapers, and email worms and spam.
Captcha or completely automated public turing test to tell computers and humans apart is a technique to distinguish between humans and computers captcha is mainly used as a security check to ensure only human users can pass through generally, computers or bots are not capable of solving a captcha.