Whose patent is SMS verification code?

Beijing Zitiao Network Technology Co., Ltd. is a registered patent of Beijing Zitiao Network Technology Co., Ltd. according to the patent network, the filling method of SMS verification code and the patent of electronic equipment ... SMS verification code is an effective verification code system by sending verification code to mobile phones. No matter large websites, especially shopping websites, they all provide SMS verification code function, which can accurately and safely ensure the safety of shopping and verify the correctness of users.