The anti-repudiation function means that you can trace the circulation and tracking of tasks through signatures and timestamps, and clarify responsibilities.

Tianyi U Shield (provincial version) is a product that uses the data security storage and calculation ability of telecom NFC-SWP card to load keys and digital certificates into UIM card, and uses hardware to encrypt and sign sensitive transaction information, thus providing high security authentication services for mobile Internet applications. Tianyi U Shield (provincial edition) is divided into enterprise edition and personal edition. Tianyi U Shield (provincial version) (enterprise version) is suitable for post-paid Tianyi mobile phone users who need high security authentication services, such as banking, third-party payment, mobile office and other industries. Tianyi U Shield (provincial version) (personal version) is suitable for post-paid Tianyi mobile phone users who have passed the real-name authentication of Wing Pay.