It depends on location, I doubt some shop or restaurant worker will bother to scan your paper and upload it to the government. QR code scanning should work with

It depends on location, I doubt some shop or restaurant worker will bother to scan your paper and upload it to the government. QR code scanning should work without Internet I bet if you (the group that thinks it is a conspiracy not you personally) could just disassemble the Android app and see exactly what it sends and to who.