A couple of years ago, QR-bills were introduced in Switzerland as a means to make payments easier. My bank provides an app to scan the QR codes, which I prefer not to install. The only other option they provide to scan the codes is to use the webcam. Am I supposed to print my digital bills to have my webcam scan them again? Just let me upload a goddamn screenshot.
Buy a regular standalone USB webcam, and point it at the computer screen with the code in some corner.
No printing required.
Accept that you will require some workaround since you do not wish to install the QR app.