What is the verification code of mini-world?

The verification code of mini-world received by each mobile phone number is different, so it is impossible to determine the verification code of mini-world;

Under normal circumstances, the verification code is generally used to prevent batch registration, which is difficult for people to see, let alone machines. Second, Baidu Post Bar has not become a member of this bar. Probably to prevent a large-scale anonymous reply to the input verification code. At present, many websites adopt verification code technology to prevent users from automatically registering, logging in and pouring water by robots.

Captcha generates a picture from a series of randomly generated numbers or symbols, and adds some interference to the picture, such as randomly drawing several straight lines and some points. Users can identify the verification code information with naked eyes, enter the form and submit it to the website for verification. Only after the verification is successful can they use a certain function.

Extended data:

Mobile phone verification code is the most effective verification code system by sending verification codes to mobile phones. Large websites, especially shopping websites, provide SMS verification code function, which can ensure the safety of shopping more accurately and safely and verify the correctness of users.

Verification code can prevent malicious password cracking, ticket brushing and forum flooding, and effectively prevent hackers from trying to log in to specific registered users by using specific programs to crack violently. In fact, using verification code is a popular way for many websites now, and we have realized this function in a relatively simple way.

Some authentication code providers provide SMS authentication code service. Each website sends a request to the provider's server through the interface, and the server sends random numbers or letters to the mobile phone, and the provider's server verifies the authentication code uniformly.