What does the asterisk in Xue Xin mean? Com verification code?

The asterisk in the verification code represents the multiplication sign in mathematics. For example, the result of 4*3 above should be 12.

In order to prevent the website from being unscrupulously crawled or abused by its robots, the website will add verification code functions from multiple locations.

The general verification code only inputs the corresponding content according to the given text.

However, some verification codes perform some logical and mathematical operations.

Verification code is a public automatic program to distinguish whether the user is a computer or a person. The verification code question is generated and judged by the computer, and only humans can answer it. It can prevent malicious password cracking, ticket brushing, forum irrigation and other problems, and can be divided into Gif animation verification code, mobile phone short message verification code, mobile phone voice verification code and video verification code.