I bought a Light Phone to carry with me when I leave my apartment complex. If payphones still existed I wouldn't even carry that, but if there's an emergency and I'm out, I still need to contact someone. I couldn't imagine scanning a QR code for anything. I don't want to provide them with data to sell.

I have a smart phone (required for work) but it doesn't leave my complex. I know the Light Phone can be tracked with triangulation but that's much better than the smart phone's constant spying and lord only knows what my company put on the phone for their version of tracking.