From September 23rd，Mainland China has fully resumed the processing of travel visas to Macau，Passengers holding valid entry and exit documents must hold a valid nucleic acid test negative result certificate within 7 days，And apply for "Guangdong Health Code"，You can pass the customs freely with the "Guangdong Kang Code" green code。This means that Macau tourism is fully open。Since system activation，The total number of people passing through customs with health code certificates exceeds 17 million。Customs clearance personnel receive code for the first time、Transcoding to generate customs clearance 188bet Online Sports Betting and Casino voucher，The average duration of the whole process is about 1 minute and 40 seconds，It takes no more than 3 seconds to obtain the clearance voucher when clearing the level again，Achieve "fast transcoding、Clear the level with the code”。

May 2020，The Macau Health Bureau and the Macau Science and Technology Development Fund released the first blockchain health code。Based on the existing mobile web version of "Personal Health Declaration" in Macao，Both parties jointly developed the “Macau Health Code” based on blockchain，As an electronic voucher for users to pass in some public places，To improve Macau’s epidemic prevention measures，And subsequently achieved mutual recognition with the mainland’s “Guangdong Health Code”。Because of the new crown epidemic，The issuance of independent travel visas from the Mainland to Macau will be suspended starting from January。The launch of the cross-border mutual recognition system of Guangdong and Macao health codes，Greatly improves the accuracy and efficiency of cross-border information verification，Ensuring cross-border travel between mainland China and Macau returns to normal。

In the process of cross-border mutual recognition of "Guangdong Health Code" and "Macao Health Code"188bet Online Sports Betting and Casino ，The biggest problem is health code generation、User information security and privacy protection issues during use，The security and privacy standards should comply with the relevant regulatory requirements for user privacy protection in both places。Because only local authorities have the ability to verify the personal information and nucleic acid testing information of residents in the two places，So relevant institutions in Macau and the Mainland need to ensure that user data is not directly transmitted and exchanged，Build a verification channel that can verify the authenticity and validity of the information submitted by users。

This time Guangdong and Macao take advantage of the technological advantages of blockchain，Solved this problem。This project is developed based on the domestic open source blockchain underlying framework FISCO BCOS，And adopts the open source blockchain entity identity and trusted data exchange solution WeIdentity，Convert health code related information into encrypted and verifiable digital certificates，The institutions in the two places can still verify the authenticity and validity of the information even if the background is not interconnected。When users need to verify health codes across borders，No need to fill in information repeatedly on multiple 188bet online sports betting platforms，The system will automatically transcode the user after obtaining authorization。The whole process，There is no direct transmission of user data in the background of "Macau Health Code" and "Guangdong Health Code"，Make sure the Macau Health Code is being generated、User information security and privacy protection during use，Full compliance with the relevant requirements of laws and regulations in both places。

FISCO BCOS and WeIdentity matching solution，Provides a new technical solution for global health agencies and border management agencies to solve cross-regional information security and privacy protection issues，To resume cross-border travel during the COVID-19 epidemic，Provides experience reference。