Thank you very much friends, you have helped me a lot

Thank you very much for your reply, but I would send the data to the server and based on the boolean response I would decide whether to free the user or not. I also want to send in my POST method JWT in the header and my device ID and data with my QR/NFC handler in the body of my message.

Hello guys, I'm new to this, especially working with ESP modules. I bought an ESP32 with a camera, my wish is to make a QR code reader that, after reading the QR code, will send the data to the server where it will be compared with the database, whether to let the user enter the room or not. Can you...