Mobile cloud security is a combination of Internet and mobile security technology. Based on three-level business platforms such as information system security, it provides government and enterprise customers with the capabilities of mobile device and application management (MDM), VPDN secure data channel, Tianyi U shield security identity authentication, etc., covering cloud, management, terminal and core all-round security promotion services. Tianyi U Shield security identity authentication capability is a security unit (SE) based on UIM card, which provides hardware-level security identity authentication and digital signature authentication for mobile applications of government and enterprise customers. Click on "official website" Customer Service 2 17 below for more service offers.