What does Shanghai remittance data SMS verification code mean?

Shanghai remittance data SMS verification code is a sign of security authentication. SMS verification code is a method to confirm security. Is a public * * * fully automatic program, used to distinguish whether the user is a computer or a person. It can prevent malicious password cracking, ticket brushing and forum flooding, and effectively prevent hackers from constantly trying to log in to specific registered users and use specific programs for violent cracking. In fact, using verification code is a popular way for many websites now, and this function is also realized in a relatively simple way.