The identity of the high-speed rail ticket has been verified. Why do you need verification?

Since March this year, 1, 12306 system has been upgraded, and the website will verify the identity information of online train ticket users. Passengers who have purchased train tickets online before the system upgrade will be automatically judged as' passed' after the system upgrade; For passengers who have not bought online before, the system will display' to be verified' because they have no history. To be verified' means that the passenger's identity information has not been verified, and it is wrong to wait for the system to audit. Passengers should register relevant information at 12306, and then take the original valid ID card filled in at the time of registration to the station ticketing window or the railway ticket sales point for manual verification, and bring the last 4 digits of the mobile phone number of the registered account or the first 3 digits of the registered mailbox. As long as the train ticket passes the manual window verification at the first online shopping, the passenger's identity information will become' passed' and the train ticket can be purchased online normally in the future. "