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2.1.2 How to scan
AI-6821/AI-6821HD emits a cross pattern
when it is scanning. Any bar code in the range
of the cross could be read. Typically, the bar
code closest to the center will be read first,
but if the quality of this bar code is poor, your
scanner might read other bar code first.
If you want to scan a bar code in a small area
that contains multiple bar codes, it would be
better to cover other bar codes in the range
of the cross, in case your scanner scans the
bar code you don’t need.
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