What does the verification code of the mobile phone number authorization function of WeChat applet mean?

In this case, openid can identify users by default. At the same time, the user will be assigned a session key, which is valid for only 5 minutes and is also a way of authentication. Avoid the risk of obtaining other information by obtaining openid alone. In addition, session keys are also used when decrypting data such as user information and mobile phone numbers.

Authorization in small programs, specifically, is the right to pop up a window to request the use of certain functions, such as authorization to obtain user information, authorization to obtain mobile phone numbers, and so on. , and the title will show "WeChat authorization":