Without trying to be funny, perhaps you should use a camera then and not a phone, to take photos? You're already in the realm of your device doing many more things than "the thing".
As for scanning automatically, no camera app based scanner I have witnessed performs any action in response to finding a QR without user input. Of course this could still happen accidently or by the QRs content finding some vulnerability.
At the end of the day, I think QR scanning in the camera is the obvious solution to non-hacker-news-browsing-people, and to make it go mainstream it needs to be accessible.
In spite of the above, I still agree with you, and use a barcode scanner from f-droid myself.
As for scanning automatically, no camera app based scanner I have witnessed performs any action in response to finding a QR without user input. Of course this could still happen accidently or by the QRs content finding some vulnerability.
At the end of the day, I think QR scanning in the camera is the obvious solution to non-hacker-news-browsing-people, and to make it go mainstream it needs to be accessible.
In spite of the above, I still agree with you, and use a barcode scanner from f-droid myself.