Application of SMS verification code in college entrance examination

Using SMS verification code in the college entrance examination is like entering the gate and the doorman asks you for your password. If the password of the verification code is incorrect, the doorman will not let you in the gate. In other words, in addition to the account number and password, a verification code is needed to verify a real identity. This is called triple guarantee. Because the account number and password are fixed, it is easy to be stolen and forged. The verification code is the password of the other party, which is dynamically variable. If the answer is wrong or you can't answer it, then you are definitely not in this group.