Provide personal identity certificate, personal information registration form, etc. Postal u-shield can be used for online services in many fields such as online banking and government services. To apply for postal u-shield, you need to provide the original and copy of your valid identity document. You also need to fill in the personal information registration form and u-shield application form, and sign the relevant Agreement, to apply for U-shield for others, you also need to provide relevant authorization certificates and the valid ID of the authorized person. Postal u-shield is a digital identity authentication tool based on physical security technology provided by China Post Group Corporation.