1. Bank card authentication is to verify whether the four elements of the cardholder's name, ID number, bank card number and mobile phone number reserved by the bank are in conformity. If the authentication fails, it is caused by the inconsistency of the information of the four elements, and the user needs to bring his ID card and bank card to the bank for re-processing.
2. If there is no authentication function, mobile users can access and use any wireless network at will, the interests of operators will not be guaranteed, and the safety of users will also be threatened.
3. User authentication is to authenticate users who try to access the network and check whether they have the right to access the network. User authentication can protect the network and prevent illegal embezzlement. At the same time, customers in the network are protected by rejecting the invasion of fake legitimate customers.