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I've used laptop cameras with no issue whatsoever.
Might be that the QR code is too small or your camera is too far? Maybe moving too much?
QR codes are really robust, and usually work really well.
My Chromebook would disagree. A kids' toy has a better camera than my laptop. Even adjusting QR density doesn't help here.
And even funnier, the Jade camera, which must have half a pixel for resolution, manages to scan QR codes just fine.
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