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QR code: tracking is unstable

Hello, sometimes the tracking of a QRCode doesn't work at all. If I then move the mobile phone wildly, usually closer or further away, the code is recognized and the virtual objects fade in. Why is that so unstable? Cheers, SB

Hello,

Vuforia does not natively support QRCodes. Did you mean VuMarks?

If so, please provide a video that demonstrates the behavior for triage.

Thanks,

Vuforia Engine Support