Captcha was originally created to prevent spamming, though captcha is now being used for many other purposes. Well, I got it. But how does Captcha prevent spamming? Suppose a new movie is released today as a movie. Being a new movie, more people than usual will be interested in going to the cinema hall for the first time. As a result, the demand for movie tickets on the first day will be higher than normal. Now, on this occasion, a computer programmer will create an intelligent program that allows him to buy all the tickets online from the first day alone. To do this he will need a powerful bot or program, as he will never be able to do it alone. With the help of this bot he will buy all the tickets in advance and then start Black marketing. Due to the out-of-stock ticket and the demand for tickets, he will be able to sell these tickets at a higher price than he has bought himself. Capture is needed to prevent this kind of illegal activity. In order to prevent this kind of action, the server needs to understand whether the device that the server is accessing is operating by a real person or a bot created by a programmer. Without realizing it, it will be possible to intercept the entire process. That requires assigning some tasks that are very easy for humans to do but difficult for computers or robots just before accessing the server.
Answered by
Birds of the sky (2 Golds)
Thursday, 30 Jan 2020, 08:40 AM
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