Blockchain allowed 17 million people to travel between Guangdong, Macau amid coronavirus pandemic

Even amid a global travel standstill due to the coronavirus, more than 17 million people travelled between Macau and Chinaࢀ™s southern Guangdong province since May. This is thanks to a mutually recognised QR health code system using a crucial piece of technology: blockchain. Blockchain technology is seen as a secure way to transfer data as it stores records in a network of computers instead of a centralised system. Each new record is linked to previous ones, making it extremely difficult for anyone to make changes. The mainland China-Macau health code system, based on technology by Chinese open-sourced blockchain platform FISCO…