How to input verification code correctly

Look carefully, you can't see clearly. Change one, commonly used verification code, random number string, random number used in the picture. Open your eyes and enter the words, letters or symbols you see accurately into the box, and it's done.

Functions of SMS verification code:

It is most appropriate to make sure that this mobile phone is your own, not just any mobile phone number.

Graphic verification code: prevent large-scale machine registration and prevent machine violence from cracking your password.