Alipay health code display allows me to upload my avatar. What is the reason?

Real name authentication.

Because the real-name authentication of Alipay health code needs to upload my avatar to verify my identity information, and the purpose is also to ensure the safety of personal identity information.

Health code is a personal two-dimensional code based on actual real data, which is generated by citizens or people who have returned to work on their own online declaration and background audit. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city.