I can’t scan a barcode. What might be the problem?
If you have trouble scanning a barcode with the Cognex Mobile Barcode SDK, try the following:
Check if the barcode type you are attempting to scan is enabled and active within the SDK.
For mobile devices, check that your camera meets our minimum requirements – 5 Megapixel (MP) with Autofocus (AF);
Try different barcode images to confirm an image is not damaged, too small, or has poor resolution;
Clean the camera lens;
Try alternate devices to confirm a device is not physically damaged or defective;
Decoder input is limited to 3000x3000 so image should be downscaled (by factor of 2 preferably) until it fits into that dimension;
Default minimum length for Code 39 which is set to 5 - detailed explanation is in FAQ #5