I'll be interested to see if anyone else can reproduce this. I created a request bin [0], then created a QR code pointing at it, then downloaded that QR code. I'm not sure how often this "image scanning" is supposed to occur but just downloading it didn't cause a hit nor did the 10min I waited, nor did using QuickLook, nor opening it Preview, nor scanning it with my iPhone, the only thing that caused a request was clicking on the detected link in my iPhone camera app.
Obviously if this is a background daemon that runs periodically then my test wouldn't catch it (unless I got "lucky") and for a longer-term test I'd probably want to use something other than request bin. That said request bin says it keeps bins for 48 hours so that might be enough time.
My comment from there:
I'll be interested to see if anyone else can reproduce this. I created a request bin [0], then created a QR code pointing at it, then downloaded that QR code. I'm not sure how often this "image scanning" is supposed to occur but just downloading it didn't cause a hit nor did the 10min I waited, nor did using QuickLook, nor opening it Preview, nor scanning it with my iPhone, the only thing that caused a request was clicking on the detected link in my iPhone camera app. Obviously if this is a background daemon that runs periodically then my test wouldn't catch it (unless I got "lucky") and for a longer-term test I'd probably want to use something other than request bin. That said request bin says it keeps bins for 48 hours so that might be enough time.
[0] https://requestbin.io/